Option A, The functional structural and operational component of the kidney is the nephron. because it is the kidney's smallest structure capable of performing its duties.
The nephron is the name for the kidney's functional unit. Each kidney has hundreds of thousands of nephrons, which have the capacity to absorb, resorb, and expel chemicals. The glomerulus, proximal convoluted tubule, and Henle's loop make up this structure. It functional consists of a coiled renal tubule and a peritubular capillary vascular network. The tubule is divided by many sections, each nephrons of which serves a crucial purpose. Each kidney has a little over a million nephrons.
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Which neurotransmitter is released by both preganglionic and postganglionic neurons of the parasympathetic division?
Acetylcholine is released by both preganglionic and postganglionic neurons of the parasympathetic division.
The main neurotransmitter of the parasympathetic nervous system, which regulates smooth muscle contraction and blood vessel dilatation and decreases heart rate, is acetylcholine, a chemical produced by neurons. The central nervous system is filled with cholinergic neurons, which emit the excitatory neurotransmitter acetylcholine. In the membranes of the rat corpus striatum, choline promotes the release of acetylcholine and guards against the stimulation-induced drop in phosphatide levels. Acetylcholine, which is generated by the sympathetic splanchnic neurons, activates chromaffin cell membrane nicotinic acetylcholine receptors (nAChRs), which release catecholamines into the bloodstream to prepare for the fight-or-flight response.
Hence, acetylcholine is chemical messenger in nervous system.
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All of the following are examples of prezygotic genetic isolating mechanisms except:.
the ______ is located within the precentral gyrus of the frontal lobe of the cerebrum.
The frontal lobe of the brain's precentral gyrus contains the primary motor cortex.
What part of movement can the motor cortex play?The cortex's primary function is to send signals that regulate how the body moves. It belongs to the frontal lobe and is located before the central sulcus.
Which muscles is the premotor cortex in charge of?An additional feature of this area is a motor homunculus, which is an inverted image of the other half of the body. Therefore, the upper half of the motor cortex stimulates leg movements, whereas the bottom section of the motor cortex stimulates facial motions.
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Explain how a signal is transmitted at a synapse and how the painkillers reduce the pain.
Synapses acting as circuit connecting the nervous system to the brain will send pain signal to the brain from the area that experiences pain and painkiller blocks the nervous system making the signal harder to reach the brain.
Under normal circumstances, whenever someone is feeling pain sensation on certain parts of his/her body, the thousand of synapses that connect neurons will allow transmission of repeated pain signals from the receptors to the brain telling the brain about the particular pain sensation.
Painkiller works on reducing pain in two ways. First, it reduces the pain by disrupting and depressing the signal transmission from the nervous system to the brain, thus making the brain received much less pain signal from the pain receptors. Secondly, painkiller such as ibuprofen attaches itself to the many pain receptors it comes across, thus blocking the pain receptors from sending pain signal to the brain.
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Dsscs can be used in interior appliances and still generate a significant amount of energy.a. Trueb. False
Dsscs can be used in interior appliances and still generate a significant amount of energy is true.
In dye-sensitized solar cells (DSSCs), an organic dye is used to absorb solar energy, causing excited electrons to form and transmit energy to a less expensive substance, such as titanium dioxide (TiO2). The energy is subsequently gathered on a transparent conducting surface. Its conversion efficiency is now between 8% and 11%, which is lower than the majority of other existing solar technologies. This is due to issues with the electrolyte solution and the dye utilised.Photovoltaic devices called dye-sensitized solar cells (DSSCs) employ organic dyes (photosensitizers) and semiconductors to convert light energy into electrical energy. Because solar energy is the most prevalent type of renewable energy, they demonstrate to be the most affordable and environmentally friendly power source for MEC applications.To know more about solar check the below link:
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which compound is not a protease that acts in the small intestine? a. chymotrypsin b. elastase c. enteropeptidase d. secretin e. trypsin
Option D, The protease that functions in the small intestine is not by secretin compound.
Secretin is a hormone that is produced into the circulation when hydrochloric acid leaves the small intestine and enters the duodenum. It controls the secretions of protease the liver, pancreas, and stomach by stimulating the acinar cells to release water and bicarbonate into the pancreatic ducts that drain into the duodenum. The small intestine of the duodenum, which are found in protease the digestive glands, generate this peptide hormone. The pancreas is secretin's primary target, and in response, it secretes a fluid that is high in bicarbonate and travels down the pancreatic duct into the first section of the small intestine.
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cell division that reduces chromosome number from diploid to haploid, reduction division
Meiosis is also known as reductional division. It is the type of cell division where the parent cell's half of its chromosomes are reduced. Meiosis is a division that converts a diploid cell (two sets of chromosomes) to a haploid cell (one set of chromosomes). As a result, the parent cell's chromosomal count is reduced by half during meiosis.
What stage of meiosis reduces chromosome number?
The first round of nuclear division that occurs during the formation of gametes is called meiosis I. It is also known as the reduction division because it results in cells that have half the number of chromosomes as the parent cell.
What stage of meiosis do cells become haploid?
The haploid transition of the daughter cells occurs during telophase II of meiosis. DNA is copied during S phase just before meiosis. The parent cell has 92 chromosomes following S phase since human cells typically have 46 chromosomes.
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Why are amino acids and polypeptide chains important?
The amino acids and polypeptide chains are important because of their role in the body for the synthesis of important molecules like proteins, neurotransmitters, enzymes, and hormones.
Amino acids are nitrogen-containing compound that helps to build protein. Hence, they are referred to as building units of proteins. These amino acids are not only required to synthesize protein but also required to synthesize other important nitrogen-containing compounds like peptide hormones, enzymes, neurotransmitters, and creatine.
A polypeptide is nothing but a chain made of amino acids. Two or more polypeptide chains help to form protein. This protein is used for the regular functioning of cells. It is also used to build up the structural components of the cell. They as enzymes help to speed up the biochemical reactions that occur in the body.
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what hormones do the follicular cells produce and secrete, and what are the functions of these hormones?
They secrete T3 (tri-iodothyronine) and T4, two hormones that affect the pace of metabolism[23] (tetra-iodothyronine or thyroxine).
Where are follicular cells found?The thyroid gland's follicular cell is one example of a follicular cell. The follicles that surround the oocytes include granulosa cells. Follicular dendritic cells are lymphoid tissue cells that are present in the follicles.
Cancer-causing follicular cells exist?After papillary carcinoma, follicular laryngeal carcinoma (FTC) is just the second most frequent thyroid malignancy. Differentiated thyroid tumors, which account for 95% of instances of thyroid cancer, are flat and papillary thyroid cancers. The enzymes required for both the synthesis of thyroglobulin and the release of hormone insulin from thyroglobulin are found in the follicular cells.
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how have dna microarrays made a huge impact on genomic studies? a. they can be used to eliminate the function of any gene in the genome. b. they can be used to introduce entire genomes into bacterial cells. c. they allow the expression of many or even all of the genes in the genome to be compared at once. d. they allow physical maps of the genome to be assembled in a very short time.
DNA microarrays made a huge impact on genomic studies as c. they allow the expression of many or even all of the genes in the genome to be compared at once.
A microarray is a tool in the lab that can simultaneously detect the expression of thousands of genes. DNA microarrays are printed microscope slides that contain a known DNA sequence or gene in thousands of tiny spots in predetermined locations.
DNA microarrays changed the way gene expression profiling was done. DNA microarrays are less cumbersome and have significantly higher throughput than previous methods. Microarrays were created as a way to map and sequence DNA on a large scale.
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the sympathetic and parasympathetic divisions of the ans have the same effect on most body organ systems.
Many organs are controlled primarily by either the sympathetic or parasympathetic division.
Sometimes two divisions have opposite effects on the same organ.
For example, sympathetic division increases blood pressure, and the parasympathetic division decreases it
The sympathetic nervous system (SNS) prepares the body for intense physical activity and is often referred to as fight-or-flight response.
The parasympathetic nervous system (PSNS) generally has opposite effect and relaxes body and inhibits or slows many high energy functions
The autonomic nervous system controls internal body processes such as following:
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complete the following sentence correctly. the membrane of a neuron contains many more __________ leak channels than __________ leak channels, and this causes the resting membrane potential to be somewhat near to the equilibrium potential for __________.
K+ leak channels than Na leak channels, and this causes the resting membrane potential to be somewhat near to the equilibrium potential for K+.
What creates membrane potential, and how does it work?Membrane potential, to put it simply, results from differences in the concentration and permeability of significant ions across a membrane. The difference in ion concentrations across a membrane causes the membrane to have an electrical charge.
The membrane potential where is it?The uneven distribution of ions between the inside and outside of the cell, as well as the membrane's varying permeability to various types of ions, influence the resting membrane potential
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when muscle proteins are catabolized in skeletal muscle during a fast, what are the fates of the glucogenic amino acids and other amino acids?
Glucogenic amino acids are used to make glucose for the brain. Others are oxidized in mitochondria via the citric acid cycle.
Glucogenic amino acids include glycine, serine, aspartic acid, glutamic acid, glutamine, valine, methionine, histidine, and arginine. Pyruvate, -ketoglutarate, succinyl CoA, fumarate, or oxaloacetate are the products of gluconogenic amino acid.Pyruvate and other intermediates of the citric acid cycle, which serve as precursors for gluconeogenesis, are produced during the metabolism of gluconogenic amino acids. Acetyl-CoA, which results from the conversion of ketogenic amino acids, produces ketone bodies. As the expression of BCAA aminotransferase (BCAT2), an enzyme that catabolizes the first step of BCAA degradation, is high in the skeletal muscle and low in, it is believed that the branched-chain amino acids (BCAAs; valine, leucine, and isoleucine) are metabolized and used as energy sources in the skeletal muscle [13].
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On Isle Royale, if the moose population is very high, what would you expect to see with regard to other populations?
Increasing wolf population
decreasing tick population
increasing tree ring width
all of the above
none of the above
Option a.) increasing wolf population is the correct answer because, with more than 50 years spent studying Isle Royale wolves and if the moose population is very large.
The study is the world's longest-running study of predator-prey systems. A parvovirus in dogs accidentally introduced by humans caused the wolf population to collapse in 1980. In 1996, the harshest winter on record and an unexpected moose tick outbreak decimated the moose population. Extreme levels of inbreeding among wolves declined when wolves migrated from Canada in the late 1990s. Correspondingly, wolf populations increased in the early 21st century, despite a general decline in elk.
The most important events of the chronology were largely unpredictable.
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a gram stain performed on sputum specimen revealed gram-negative diplococci within pmns. oxidase testing is positive and carbohydrate degradation tests are inert. the organism is:
Dacron or rayon swabs should be used instead of cotton swabs because calcium alginate inhibits N. gonorrhea growth. Performing a nucleic acid amplification test (NAAT) for gonorrhea This is the preferred test for gonorrhea infection because it can identify the genetic material (DNA) of the gonorrhea bacteria.
The gram-negative diplococcus bacterium Neisseria gonorrhoeae, which is closely related to other human Neisseria species, is the prevalent STI that causes gonorrhea. Women are frequently asymptomatic but may experience vaginal discharge, whereas men typically present with urethral discharge. Using a urine sample or a swab collected from a possible infection location, this kind of test can be conducted.
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PLEASE HELP ILL GIVE YOU BRAINLIEST
Answer: B.
Explanation: It can't be A because the arrow with heat pressure should be going from igneous to metamorphic.
It can't be C because it would go from sediment to sedminentary. It can't be D because it would go from magma to igneous.
ribosomes cannot directly process dna to synthesize polypeptides; they can only translate a specific type of rna transcript, the rna. t r f
It is true that ribosomes cannot directly process DNA to synthesize polypeptides; they can only translate a specific type of RNA transcript called messenger RNA.
What is translation?Translation is the process whereby a strand of mRNA directs assembly of amino acids into proteins within a ribosome.
The ribosome is a small organelle found in all cells and it is involved in the production of proteins by translating messenger RNA.
The ribosome is regarded as the site of protein synthesis in the cell. The ribosome reads the messenger RNA (mRNA) sequence and translates that genetic code into a specified string of amino acids, which grow into long chains that fold to form proteins.
Therefore, the above statement in the main answer part is true.
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The external ear is located mostly on the outside of the body, and the middle and inner ear areas are housed within the _____ part of the temporal bone.
The pinna, also known as the auricle, the external acoustic meatus, which is the opening to the ear canal from the outside, and the external ear canal, which connects to the eardrum, make up the outer ear.
Which one of the following describes the middle ear cavity?
It includes the Eustachian tube opening, two muscles, three small bones with their ligaments, an oval window, and a round window. Air can enter the mastoid air cells of the temporal bone through an opening in the attic of the middle ear, also known as the epitympanic cavity.
What is the name of the elevated area of the semicircular canal's ampulla?
Each of the semicircular canals has a dilated sac at one end known as an osseous ampulla that is larger than the canal in diameter. Each ampulla has an ampullary crest, or crista ampullaris, which is made up of many hair cells and a thick cupula of gelatinous material.
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Explain the relationship between between the reactants and the products of photosynthesis and cellular respiration.
How does energy and matter flow into and out of photosynthesis and cellular respiration?
Answer:
Photosynthesis and cellular respiration are two processes that are essential to the survival of most living organisms. Both of these processes are involved in the conversion of energy and matter into forms that can be used by cells.
Photosynthesis is the process by which plants, algae, and some bacteria use energy from sunlight to convert carbon dioxide and water into glucose, a type of sugar. This glucose is then used by the cells as a source of energy. In the process of photosynthesis, oxygen is produced as a byproduct.
On the other hand, cellular respiration is the process by which cells convert the glucose produced by photosynthesis into energy. This energy is used by the cells to perform various functions, such as growth and reproduction. In the process of cellular respiration, oxygen is consumed and carbon dioxide is produced as a byproduct.
In summary, the reactants of photosynthesis are carbon dioxide and water, while the products are glucose and oxygen. The reactants of cellular respiration are glucose and oxygen, while the products are carbon dioxide and water.
Overall, energy and matter flow into photosynthesis in the form of sunlight and carbon dioxide, and flow out in the form of glucose and oxygen. In cellular respiration, energy and matter flow into the process in the form of glucose, and flow out in the form of carbon dioxide and water.
Explanation:
label the reproductive structures of the female pelvis using the hints provided.
Reproductive structures of the female pelvis
The top left is the Crus of CTthe 2nd left is the Labium minusthe bottom is the Labium majusthe bottom right is CTthe top right is the Mons pubisWhere is the female pelvis located?The pelvis is located at the bottom of the torso. It can be found between the abdomen and the legs. This region houses the bladder and reproductive organs as well as the intestines.
The endometrium, uterus, ovaries, cervix, vagina, and vulva are all organs and structures found in the female pelvic area. The reproductive parts include mons pubis, labium majus and labium minus.
The full question is:
label the reproductive structures of the female pelvis using the hints provided.
CT
Labium minus
Crus of CT
Labium majus
Mons pubis
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__________ is a highly conserved nucleotide sequence that has been found in developmental regulatory genes in many diverse organisms.
A homeobox is a highly conserved nucleotide sequence that has been found in developmental regulatory genes in many diverse organisms.
A homeobox is referred to a type of genetic sequence that is highly conserved and is usually found in plants and animals and also in several forms of fungi. This type of genetic sequence are usually found in those organisms where the regulation of patterns within the genes occur. Thus they can also be found in single cell Eukaryotes. The regulation within this sequence occurs in the early stages of the development of the Embryo. The structural composition of a Homeobox consists of longs chains of amino acids and it has a three alpha helical structure. Mutation is also possible in these genetic sequences.
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if you were given a microscopic organism and asked to determine whether it is a eukaryotic how would you do it
Answer: You will know the cell you are looking at under the microscope is a eukaryote if you see a nucleus. This is the main distinguishing feature of eukaryotes and prokaryotes.
Explanation:
the site of translation in all living cells is the ribosome, which is a. made of large and small subunits in prokaryotes but is a single unit in eukaryotes. b. larger in prokaryotes than eukaryotes. c. a single unit in both prokaryotes and eukaryotes. d. made of large and small subunits in eukaryotes, but is a single unit in prokaryotes. e. made of large and small subunits in both prokaryotes and eukaryotes.
The site of translation in all living cells is the ribosomes, which is made of large and small subunits in both prokaryotes and eukaryotes. Therefore, the correct answer is option E.
Ribosomes are macromolecular machines that perform biological protein synthesis. It's found in both eukaryotes and prokaryotes. Ribosomes consist of two subunits: one large subunit and one small subunit.
In prokaryotes, the large subunit is the 50S which contains 5S RNA, 23S RNA, and 34 different proteins. The small subunit is the 30S which contains 16S RNA and 21 different proteins.
In eukaryotes, the large subunit is the 60S with contains 5S RNA, 5.8S RNA, 28S RNA, and 48 different proteins. The small subunit is the 40S which contains 18S RNA and 33 different proteins.
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What Is the Term for the Contractile Response of a Single Muscle Fiber to a Single Muscle Impulse?
The term for the contractile response of a single muscle fiber to a single muscle impulse is called a twitch.
Twitching occurs when one of the muscle fibers contracts on command (stimulus) from the nervous system. A muscle twitch has a latent phase, a contraction phase, and a relaxation phase.
The time between activation of the motor neuron until muscle contraction occurs is called the lag phase (sometimes called the latent phase). During the lag phase, signals called action potentials to travel to the ends (axon terminals) of the motor neuron. This causes a release of acetylcholine and depolarization of the motor end plate.
This next phase is called the contraction phase. During the contraction phase, a bridge is formed between actin and myosin. Myosin activates actin, releasing the cross bridges and rebuilding them repeatedly as the sarcomere shortens and the muscle contracts. In this step, ATP is consumed, and energy is released as heat.
When muscles relax, tension is released. This phase is called the relaxation phase. During this phase, calcium is actively transported back to the sarcoplasmic reticulum with the help of ATP.
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you have been chosen as the lead student gardener for the csumb future farmers of america club (ffac). your club is looking to you and your bio211 plant experience to guide them. you arrive at the new ffac garden plots where your club mates are trying to grow chard and kale. however, the leaves are tough and bitter and they keep sending up flower stalks. which hormone do the chard and kale plants likel
The plants likely need gibberellic acid, a hormone that helps prevent premature flowering and encourages leaf and stem growth.
Gibberellic acid is a naturally occurring plant hormone that plays a key role in the growth and development of plants. It is a gibberellin, a type of plant hormone, and is used to promote growth and development in plants by stimulating cell division, germination, and flowering. Gibberellic acid is also used to promote fruit set and increase the size of fruits. It is also used to induce flowering in some plants. Gibberellic acid is produced naturally in plants and is involved in a variety of growth and developmental processes. Its use in agriculture has been of great benefit to farmers and growers, as it has allowed them to increase crop yields and improve crop quality. Gibberellic acid is also used in horticulture to increase flower size and promote flowering in plants that do not typically flower.
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hich statement best describes the percentage of plagioclase feldspars in a sample of gabbro? * 2 points a. gabbro always contains less plagioclase than pyroxene b. gabbro contains no plagioclase feldspars c. plagioclase feldspars always make up 25% of a gabbro sample d. the percentage of plagioclase feldspar in gabbro can vary
The statement that best describes the percentage of plagioclase feldspar in gabbro samples is that the percentage of plagioclase feldspar in gabbro can vary.
The true choice is D
Gabbro is a deep igneous rock, generally black, its minerals are coarse to medium-grained, and its specific gravity is 2.9 -3.21. The composition and percentage of its forming minerals is plagioclase (labradorite or bytownite) 70-45%, mafis minerals 2-50%, So the percentage varies.
The structure of the gabbro rock is massive, there are no cavities or air holes, or cracks. These rocks are fresh and have never been exposed to endogenous forces that can leave cracks in the rock. This rock has a faneric texture because the minerals can be seen directly with eye and large minerals indicate that these minerals were formed at a relatively slow freezing temperature so that the minerals form in large sizes.
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select the part whose main job is to control which substances enter and leave an animal cell.
The part of the cell responsible for controlling which substances enter and leave an animal cell is the cell membrane.
The cell membrane is a thin, flexible barrier that surrounds the cell and acts as a gatekeeper, allowing certain substances to pass through while preventing others from entering or leaving the cell. It is made up of a phospholipid bilayer, which contains proteins that act as channels and pumps to regulate the movement of molecules in and out of the cell.
The cell membrane is essential for maintaining the integrity and function of the cell, as it allows the cell to take in nutrients, eliminate waste, and communicate with other cells. It also provides structural support and helps to protect the cell from damage.
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a scientist is studying the human population of country x. to predict the future growth rate of the population, which three statistics about the population of country x would be most useful for the scientist to analyze? select three answer choices.
Birth rate, death rate and age structure
how are growth rate can be helpful to us?
Growth rates can help you evaluate a company's performance and forecast its future performance. By dividing the difference between the starting and ending values for the time under study and then multiplying that result by the starting value, growth rates are calculated.
Growth rates describe the percentage change of a particular variable over a given period of time. Depending on whether the magnitude of the variable is rising or decreasing over time, growth rates can be either positive or negative.
According to the question:
three statistics to predict the future growth rate of the population which would be the most helpful for the scientists are Birth rate, death rate and age structure.
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Which of these mutations will have an effect on the protein produced by the gene in which the mutation occurs? Select all that apply !
Missense, nonsense and frameshift mutations will have an effect on the protein produced by the gene in which the mutation occurs.
A mutation is a change in the sequence of bases in DNA or RNA. Mutations are required for evolution to take place. They are the ultimate source of a species' new genetic material - new alleles. Although the vast majority of mutations have no effect on the organisms in which they occur, some mutations are advantageous. Even dangerous mutations rarely result in drastic changes in organisms.
A point mutation is a single nucleotide change in DNA. This type of mutation is typically less severe than a chromosomal change. A point mutation would be one that changes the codon UUU to the codon UCU.
A frameshift mutation is a nucleotide deletion or insertion that alters the reading frame of the base sequence. Insertions replace nucleotides and deletions remove them.
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Which of these animal taxa has the highest population of species threatened with extinction?
a) Birds
b) Mammals
c) Amphibians
Amphibians are the animal taxa has the highest population of species threatened with extinction.
What is animal taxa?
Taxon, multiple Any metric unit used in the field of biological taxonomy is referred to as a taxon. From kingdom to subspecies, taxa are grouped in a hierarchy, with a particular taxon typically containing numerous taxa of lower rank.
What is the extinction of species?
Extinction is the complete extinction of a plant, animal, or other species. The passenger pigeon is one of the most spectacular examples of a modern extinction.
Causes of many species' extinctions include overfishing and hunting, the conversion of wetlands and forests into farmland and cities, pollution, invasive species introduction, and other human-caused changes to their natural habitats.
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