Answer:
INDIRECT METHODS
Explanation:
To estimate population density there are two possible methods: Direct methods and indirect methods.
Abundance indexes are the parameters related to density, and they reflect changes that might happen in the target population density. They are commonly used to compare population sizes, for instance, the abundance of an insect species during the winter and the summer. These indexes are easy to get, so it is possible to make many estimations and make statistical analyses to detect differences.
There are two types of abundance indexes:
The ones based on direct observation and/or capture → DIRECT METHODThe ones based on traces and frequencies → INDIRECT METHODINDIRECT METHODS:
When talking about traces, we are referring to any mark or evidence left by animals, such as footprints, holes, feces, sediments, hair, marks, pathways, nests, shelters, dead bodies, food leftovers, songs, noises, among many others. Traces are directly related to population abundance.
The advantages over the indexes that use capture and observation are that traces are not influenced by detectability, they are much easier to use, cheaper, and they turn to be significant with less visible species.
The paths are useful, but they last for a long time in the habitat, so they do not entirely reflect the recent presence of the animal in a specific moment. However, on the paths, there can be other traces such as footprints, hair, and others that are easier to identify and which reflect a recent pass. These can be used to determine abundance.
In shy species, the alternative to evaluate abundance is to constate their presence in a sampling unit, this is, their frequency. Frequency can be used as an abundance index and, under certain conditions, might be statistically tested to evaluate abundance differences.
Which pair of elements can be used to determine the age of a fossil that is over one billion years old?
A.lead, which is radioactive, and uranium, which is stable
B.carbon, which is radioactive, and nitrogen, which is stable
C.argon, which is radioactive, and lead, which is stable
D.potassium, which is radioactive, and argon, which is stable
Answer:
A
Explanation
It should be A., lead and uranium.
How are meiosis and mitosis different?
Answer:
Mitosis produces two diploid (2n) somatic cells that are genetically identical to each other and the original parent cell, whereas meiosis produces four haploid (n) gametes that are genetically unique from each other and the original parent (germ) cell.
Explanation:
:)
Answer: Mitosis produces two diploid (2n) somatic cells that are genetically identical to each other and the original parent cell, whereas meiosis produces four haploid (n) gametes that are genetically unique from each other and the original parent (germ) cell.
. Most of these differences relate back to the fact that, although both are needed for cell replication, mitosis and meiosis have different purposes: mitosis replaces body cells with identical copies, while meiosis creates genetically different sex cells that will be used to create an entirely new organism.
Explanation:
(PLEASE HELP!! AND NO LINKS OR I’LL REPORT YOU!) True/False: Organisms can adapt to unfavorable environmental conditions in their lifetime.
Match the items. The task is to match the lettered items with the correct numbered items. Appearing below is a list of lettered items. Following that is a list of numbered items. Each numbered item is followed by a drop-down. Select the letter in the drop down that best matches the numbered item with the lettered alternatives. a. Granulated cytoplasm and lobed nucleus b. Blue staining granules c. Red staining granule d. Largest leukocyte, no granules e. Purple staining nucleus with thin rim of cytoplasm
Answer:
Appearing below is a list of lettered items. Following that is a list of numbered items. Each numbered item is followed by a drExplanation:
What happens to lymph after it travels through the lymphatic system?
Answer:
Once absorbed into the lymphatic system, the interstitial fluid becomes known as lymph and travels through the lymphatic vessels to the subclavian veins where it re-enters the blood circulation and maintains blood volume.
Explanation:
Can someone help me??? I’m not good at science.
Answer:
heterozygous
b= 25%
c=25%
d=50%
e=25%
Explanation:
im smart like that
After synapsis has finished are the chromosomes identical?
A. Yes
B. No
Answer:
Hello There!!
Explanation:
The answer is=>No.
hope this helps,have a great day!!
~Pinky~
Answer:
A. Yes
Explanation:
Hope it helps you in your learning process.
What are the consequences and causes of Space junk that affect the Earth's environment?
Answer:
The main threat to our weather from space junk is rather indirect: the density of the junk may become so great that it could hinder our ability to use weather satellites, and hence to monitor weather changes caused by our own ground-based pollution.
Explanation:
Answer:
The main threat to our weather from space junk is rather indirect: the density of the junk may become so great that it could hinder our ability to use weather satellites, and hence to monitor weather changes caused by our own ground-based pollution.
Explanation:
I hope that this answer has helped you to more thoroughly understand your question asked. If you have any further questions, please do not hesitate to ask them below.
Have a great rest of your day/night!
After studying the albedo values for Earth's surfaces, how might smoke filling the atmosphere affect the local forest temperature?
If a sexually reproducing organism was exposed to a harmful substance that caused it to use an asexual process to produce gametes what would be the result?
A-Gametes produced will be able to create offspring that are a better fit to the organism's environment
B-Gametes produced would each be unique increasing the genetic diversity of the organism's population
C-Gametes produced would be identical to the parent cells thereby lowering the genetic diversity of the population
Answer:
A
Explanation:
Does hereditary deafness affect the person's lifespan.
Answer: Yes, yes it does
Answer:
No, it will just make it harder.
What are the four different types of deserts?
Answer:
Explanation:
Name Type of Desert Location
Antarctic Polar Antarctica
Arctic Polar Alaska, Canada, Greenland, Iceland
Sahara Subtropical Northern Africa
Answer:
1) hot and dry deserts or subtropical deserts
2) semi-arid deserts
3) coastal deserts
4) cold (or polar) deserts
Will give brainliest ASAP
If a mRNA codon has ACU on it, the matching tRNA anticodon would have
Answer: https://www2.palomar.edu/users/warmstrong/codons.htm
i promise this link will help u its has most of the answe of science
Explanation:
Organisms are classified as producers or consumers according to the way they
A. obtain energy
b. Release wastes
c. Produce offspring
d. move from place to place
Answer:
A.
Explanation:
What is needed for work to be done?
Answer:
In order for work to be done on an object, what must happen to the object? A force must be applied to the object and the object must move at least partly in the direction in which the force is applied.
Explanation:
explain the term.evapouration
Answer:
the process of turning from liquid into vapour
Answer:
Evaporation is a surface phenomenon, which implies that the process only occurs at the surface of the liquid. During evaporation, the molecules of the liquid that are present at its surface overcome the intermolecular forces of attraction to break away from the liquid and escape into the atmosphere as a gas (or vapour).
Or
The process of turning from liquid into vapour
This is the Answer for your question :3
I hope you are having a great day❤️❤️❤️❤️❤️❤️
A green plant that makes its own food (glucose) by photosynthesis is called a
A.parasite
B.producer
C.Consumer
D.Omnivore
**short answer** *Describe the three stages of the cell cycle
of a eukaryotic cell.
if earth suddenly had no moon, which biome would begin to change immediately and change most?
Answer:
The ocean.
Explanation:
EOC Biology STAAR prep
Four common relationships between organisms are listed in the box. Which statements best describe these relationships?
A. Relationships 1 and 4 are examples of mutualism. Relationship 2 is an example of commensalism. Relationship 3 is an example of parasitism.
B. Relationships 1, 2, and 4 are examples of mutualism. Relationship 3 is an example of parasitism.
C. Relationship 1 is an example of commensalism. Relationships 2 and 4 are examples of mutualism. Relationship 3 is an example of predation.
D. Relationships 1 and 2 are examples of commensalism. Relationships 3 and 4 are examples of mutualism.
Please explain, I don't want just an answer.
Cells routinely release wastes as they perform their functions. In the human body, this waste is often released into the bloodstream.
Which organ removes much of this waste from the bloodstream so that it can then also be removed from the body?
A.
the heart
B.
the stomach
C.
the kidneys
D.
the lungs
Answer:
c. the kidneys
Explanation:
have a good day!
How many rings of cartilage make up the trachea?
1. 00
2. 50
3. 10
4. 20
Individuals ------ when they work together to obtain resources. A.cooperate B.compete
Answer:
A
Explanation:
50 POINTS + BRAINLIEST IF CORRECT.
Which of these statements about ocean water is always correct?
a.) Its area is less than the area of freshwater.
b.)Its salinity is less than the salinity of freshwater.
c.) Its density is greater than the density of freshwater.
d.)Its temperature is greater than the temperature of freshwater.
Answer:
c.) Its density is greater than the density of freshwater.Explanation:
Seawater is denser than both fresh water and pure water because the dissolved salts increase the mass by a larger proportion than the volume.
The freezing point of seawater decreases as salt concentration increases.
Answer:
C.) Its density is greater than the density of freshwater.
Explanation:
Average density at the surface is 1.025 kg/l. Seawater is denser than both fresh water and pure water (density 1.0 kg/l at 4 °C (39 °F)) because the dissolved salts increase the mass by a larger proportion than the volume. The freezing point of seawater decreases as salt concentration increases.
I'm not sure it could also be D
Which of these best explains why birds and dogs both show gills in their early development?
A. Both organisms can breathe underwater.
B. Both organisms share a common ancestor.
C. Both organisms use them to process food when they are young.
D. Both organisms have different ways of forming their lungs.
Answer:
d. both organisms have different ways of forming their lungs.
What is the relationship between the temperature of internal material and volcanic eruptions?
plz help.....
Answer:
Direct relationship.
Explanation:
There is direct relationship between the temperature of internal material and volcanic eruptions because the temperature of internal material causes the volcanic eruptions. The temperature of the internal material puts pressure on the rocky surface and the gases that releases from heating processes will cause pressure which leads to the eruption of the volcano so we can say that there is a direct relationship between temperature and eruption.
Cancer is a disease that involves uncontrolled cell division caused by a genetic mutation. It can occur in almost any region in the body. So, cancer is essentially uncontrolled what
of what?
Answer:
Cancer is essentially uncontrolled mitosis of specialized cells.
Explanation:
As you said, cancer can control in any region of the body. As a matter of fact, a cancerous cell is produced in your body every 30 minutes and your immune system locates and kills it. Cancer is unpredictable and can happen in any specialized cell.
Answer:
Cancer is essentially uncontrolled mitosis of specialized cells.
Good ozone is being destroyed by:
A. UV rays
B. man-made chemicals
C. plants
D. the rising ocean
Answer:
man-made chemicals
like cars,air conditioner, refrigerators,ect
Answer:
the good ozone is being destroyed by man-made chemicals
How many dogs are in the world
Answer:
900 million around the globe.
Explanation:
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