how does biodiversity help with farming
Answer:
biodiversity is the basis of agriculture and our food systems. agricultural biodiversity also performs ecosystem services such as soil and water conservation, maintenance of soil fertility, conservation of biota and pollination of plants, all of which are essential for food production and for human survival.
good luck :)
hopefully, this helps
have a great day !!
The diagram below represents a sample of a sedimentary rock viewed under a
microscope. Which part was formed first?
Cystic fibrosis is inherited with the autosomal recessive allele c. Individuals with the autosomal dominant allele C do not have the disease. Jessica does not have cystic fibrosis but she has a brother with the disease. Her husband Jerry also does not have cystic fibrosis but has a sister with the disease. a. What is the probability that Jessica carries the c allele
Complete question:
Cystic fibrosis is inherited with the autosomal recessive allele c. Individuals with the autosomal dominant allele C do not have the disease. Jessica does not have cystic fibrosis but she has a brother with the disease. Her husband Jerry also does not have cystic fibrosis but has a sister with the disease.
A- What is the probability that Jessica carries the c allele?
B- What is the probability that Jerry carries the c allele?
C- What is the probability that Jessica and Jerry could have a child with cystic fibrosis?
Answer:
A) The probability that Jessica carries the c allele equals 2/3.
B) The probability that Jerry carries the c allele equals 2/3.
C) The probability that Jessica and Jerry could have an affected child is 1/9
Explanation:
Due to technical problems, you will find the complete question, answer, and explanation in the attached files.
Jadon plans on carrying out an experiment involving the burning of steel wool to illustrate the conservation of mass. Steel wool is made of iron. When it is burned it combines with oxygen to form iron(III) oxide.
Which step in his experiment is the most important if he wants his experiment to correctly demonstrate the conservation of mass?
A. The steel wool should be burned inside of a sealed jar or other closed system.
B. The steel wool should be burned over a long period of time (at least two hours).
C. The steel wool should be burned in a room that is at room temperature (20–25°C).
D. The steel wool should be burned in its entirety so that no iron is left in its original state.
Answer:
1) Jadon plans on carrying out an experiment involving the burning of steel wool to illustrate the conservation of mass. Steel wool is made of iron. When it is burned it combines with oxygen to form iron(III) oxide.
Which step in his experiment is the most important if he wants his experiment to correctly demonstrate the conservation of mass?
A.
The steel wool should be burned inside of a sealed jar or other closed system.
Explanation:
The explanation for number 1 is in the link below and the answer is provided also:
https://quizizz.com/admin/quiz/5dee60258f1145001bc02ed5/physical-science-2nd-9-weeks-practice-test-2020
The microtubules that form in prophase and control the chromatids are called___
How old would this fossil be if only 1/128 of C-14 was detected in it?
Answer:
not sure but mark that guy brailest ^
|
An organ ________ is a combination of several organs that perform together for a common function. a. basic b. cells c. living d . molecules e. organ f. organism g. system h. tissue
Explanation:
System is a combination of several organs that perform together for a common function.
Hope it will help :)❤
How does a food chain differ from a food web?
A. A food chain identifies the consumers and producers, while a food web lists all of the animals in an ecosystem
B. A food web shows what to eat, while a food chain shows how the eating patterns are connected.
C. A food chain shows an eating pattern, while a food web shows how the various eating patterns are connected.
D. a food chain shows how eating patterns are connected among organisms, while a food web shows the eating patterns among organisms
Answer:
C
Explanation:
A food chain shows an eating pattern, while a food web shows how the various eating patterns are connected.
Which one of the following statements is wrong with respect to separation of DNA fragments on gel electrophoresis?
4 points
a. Gel electrophoresis is employed to check the progression of a restriction enzyme digestion.
b. The DNA fragments move towards cathode under electric field through the matrix.
c. The smaller DNA fragments moves farther.
d. The commonly used matrix is agarose gel.
Answer:
b. The DNA fragments move towards cathode under electric field through the matrix.
Explanation:
Gel electrophoresis is a molecular biology technique used to separate DNA fragments based on size using electric current. The electric current passes through a GEL (agarose gel is commonly used) matrix. Due to the fact that DNA is negatively charged, they tend to move towards a positively charged electrode called ANODE.
However, the smaller the size of the DNA fragment, the faster and farther it moves along the matrix. Gel electrophoresis is indeed a technique used to check how progressive a restriction enzyme has been able to digest DNA molecule into fragments.
What unit of time on Earth is based on the revolution of the Moon around the Earth?
A. day
B. year
C. hour
D. month
Answer: I think it’s months
Because I found this information... The Moon appears to move completely around the celestial sphere once in about 27.3 days as observed from the Earth. This is called a sidereal month
Free radicals are
a. generated during bacterial infections
b. highly reactive atom containing all paired electrons
c. oxygen gas we breathe
Answer:
a. generated during bacterial infections
Explanation:
Free radicals are atoms with an unpaired electron which make them highly reactive. Many of these are necessary for life, such as the intracellular killing of bacteria by phagocytic cells such as granulocytes and macrophages
Many bacteria, including E. coli, are capable of growing under both anaerobic and aerobic conditions. Some mutations are introduced into an E. coli strain that inactivate several enzymes involved in DNA repair. The mutant strain grows normally when kept in an incubator with a 100% nitrogen gas atmosphere. However, the strain dies when exposed to a normal laboratory atmosphere. Why
Answer:
Due to inability to survive in aerobic condition.
Explanation:
The strain dies when exposed to a normal laboratory atmosphere instead of nitrogen gas atmosphere because the mutation causes change in the capability of the strain to survive in the aerobic conditions. This mutation inactivate several enzymes which is also responsible for their capabilities of surviving under both anaerobic and aerobic environment so that's why the strain dies when exposed to normal atmosphere..
An inflated basketball hold 6 liters of air at 3 ATM. How much air at 1 ATM went into the ball
Answer:
18 litres
Explanation:
Using Boyle's law equation as follows:
P1V1 = P2V2
Where;
P1 = initial pressure (atm)
P2 = final pressure (atm)
V1 = initial volume (litres)
V2 = final volume (litres)
According to the information in this question, An inflated basketball hold 6 liters (V1) of air at 3 atm (P1). The volume of air (V2) at 1 atm (P2) that went into the ball can be calculated thus:
Using P1V1 = P2V2
3 × 6 = 1 × V2
18 = V2
V2 = 18 litres.
Which of the following events occurs in DNA replication in prokaryotes?
a. Replication starts from a single point and proceeds in two directions until the entire chromosome is copied.
b. Replication starts from multiple points and proceeds in two directions until the entire chromosome is copied.
c. Regulatory proteins bind to all of the nucleotides on the DNA molecule.
d. Enzymes “unzip” the DNA molecule by breaking ionic bonds between base pairs.
Answer:
a. Replication starts from a single point and proceeds in two directions until the entire chromosome is copied.
Explanation:
Hope this helps
Answer:
a. Replication starts from a single point and proceeds in two directions until the entire chromosome is copied.
Explanation:
Because it is the "Correct Answer"
Photo synthesis is impossible at a depth of 1000 b/c ? A. It is too hot B. Only blue light penetrates this far C. No light penetrates this far D. It is too cold
Answer:
B. Only blue light penetrates this far
Explanation:
How many eggs are initially produced; approximately how many eggs does Melinda still have at the age of 317
ANSWER: But Melinda created all her eggs when she looked like this, a fetus in her mother's womb. Within a couple of months, she created several million eggs. And then, the eggs began to die. At the age of 31, Melinda may only have a few thousand left.
Which resource is nonrenewable? A. Wind B. Trees C. Coal D. Soybeans
The modern cell theory doesn't say
A all living things are multicellular
B cells are the smallest living unit in all organisms
C all cells come from other cells
D all living things are made of cells
Answer:
A
Explanation:
Modern cell theory states: cells are the basic unit of structure and function for all living things, all cells come from preexisting cells, and all living things are made from cells. It does not state that all living things are multicellular, in fact there are plenty of unicellular organisms. Therefore the answer is A.
what is the function of a membrane protein
Answer:
Membrane proteins can allow hydrophilic molecules to pass through the cell membrane.
Explanation:
Answer:
Explanation:
Membrane proteins are common proteins that are part of, or interact with, biological membranes. Membrane proteins fall into several broad categories depending on their location. Integral membrane proteins are a permanent part of a cell membrane and can either penetrate the membrane (transmembrane) or associate with one or the other side of a membrane (integral monotopic). Peripheral membrane proteins are transiently associated with the cell membrane.
Which symbol represents a dominant allele?
t
Tt
T
tt
Answer:
Tt
Explanation:
The text box below contains facts about salmon:
juvenile salmon migrate from freshwater streams and rivers to the ocean.
in the ocean, juvenile salmon d.r.i.n.kk. salt water.
Special cells on the salmon's gills called chloride cells help the salmon to excrete salt.
How do populations of juvenile salmon respond to changes in salinity as they migrate?
The juvenile salmon utilize special structures but do not alter their behavior.
The juvenile salmon alter their behavior and utilize special structures.
The juvenile salmon utilize special structures to alter their behavior.
The juvenile salmon alter their behavior but do not utilize special structures.
Answer:
due to the salmons body and biology the salinity doesnt matter because they can change whats around them using the salt from inside their body
Explanation:
they both utilize and alter behavior
The populations of juvenile salmon respond to changes in salinity as they migrate the juvenile salmon utilize special structures to alter their behavior. Therefore, option C is correct.
What is salinity ?The amount of dissolved salt in a body of water is known as salinity. It makes a significant contribution to conductivity and influences many aspects of the chemistry of natural waters as well as the biological activities that take place there.
In soils and seas, primary salinity is a natural occurrence. Salt lakes, salt pans, salt marshes, and salt flats are a few examples of naturally occurring salty landscapes. Salting caused by human activity, typically land development and agriculture, is known as secondary salinity.
Salinity is the buildup of salt to a degree that harms the built environment and the ecosystem in general. While there are many areas of the Australian terrain that are naturally salty, human activity has the potential to raise salt levels. Water and salinity go hand in hand.
Thus, option C is correct.
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A new trait that was never in the gene-pool before is called a
A) Adaptation
B) Mutation
C) Genetic Variation
D) normal
Answer:
B) Mutation
Explanation:
Mutation is a mistake in the Gene's I doesnt mean it's a bad thing or a good thing. It could be both
plz answer ASAP will get ten points
Answer:
the 2nd and 4th
Explanation:
they contain more than one molecule due to them being different elements
WILL GIVE BRAINLIEST!!!!!!
the last one I guess
Explanation:
i checked internet
A person with a bacterial infection begins to feel hot and feverish. This response MOST likely helps the body fight infection by —
Answer:
making it hard for bacteria to leave the body
Explanation:
How will the temperature inside the car feel?
Hint: Akbar wonders if what happens in his car is similar to the greenhouse
effect.
Predict the temperature of the air inside the car.
Colder than the outside air.
Warmer than the outside air.
Exactly the same as the outside air.
Answer:
Predict the temperature of air inside car because we can use cooler to cool and if we close all windows it will be hot inside.
What practice helps scientists avoid bias in their findings
The kidneys and sweat glands both work to prevent excesses of
a) either uric acid or urine in the body.
b)either water or salt in the body.
c)either carbon dioxide or oxygen in the body.
d) either feces or pH levels in the body.
Answer: The kidneys and sweat glands both work to prevent excesses of either water or salt in the body
Explanation:
The kidneys and sweat glands both work to prevent excesses of either water or salt in the body. Thus, the correct option is B.
What is function of kidney and sweat glands?Both the kidneys and the sweat glands excrete nitrogenous wastes, water and electrolytes. They are also involved in maintaining acid-base balance.
kidney is the organelle present below the abdomen whereas the sweat gland is exocrine glands that release the substances into a duct or opening to the inside or outside of the body.
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Which of the following is not an example of waking conscious
mind?
Select one:
a. Solving a math problem
b. Driving a Lamborghini
c. Writing an exam
d. Taking a power
nap
b. driving a Lamborghini
Answer:
option D is correct
Taking a power nap
hope it helps
Clara, while vacationing in Italy, decided to go swimming. When she asked at what temperature the pool was kept, she was told that it had a constant temperature of 35.8°C. What temperature is the pool in °F, to the nearest tenth?
a.
53.6°F
b.
96.4°F
c.
122.0°F
d.
129.1°F
Answer:
96.4
Explanation:
The answer is at the top
When she asked at what temperature the pool was kept, she was told that it had a constant temperature of 35.8°C. The temperature is the pool in °F, to the nearest tenth is 96.4°F. Therefore, option (B) is correct.
The average kinetic energy of all of a substance's particles is used to measure temperature. The average kinetic energy of a substance rises with the speed at which its particles move, increasing its temperature and making it feel warmer.
One of the seven SI base units is the kelvin, which is the thermodynamic temperature unit. Curiously in the SI, we additionally characterize one more unit of constant temperature, called the degree Celsius (°C).
Learn more about temperature:
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