The answer is D, photosynthesis and respiration.
—Evidence—
Oxygen is a byproduct of photosynthesis and, correspondingly, carbon dioxide the byproduct of respiration.
Oxygen gives our cells the ability to break down food in order to get the energy we need to survive. Although other animals may use different organs to breathe with, they all get oxygen into their bodies through respiration.
The genetic code is directly related to polypeptides and proteins in the sense that genes are decoded to synthesize proteins.
What is the genetic code?
Genetic code is the set of rules by which the sequence of bases in DNA are translated into the amino acid sequence of proteins.
The genetic code is unique for living organisms and is used to synthesize the proteins that is responsible for various activities in living organisms.
The genes in the genetic code are first transcribed into mRNA, which is then translated into proteins (polypeptides).
Learn more about genetic code at:
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Answer:
Barbara investigating that which food the ants like the most in order to use this food for killing the ants and removes them from a specific area.
Explanation: Ants are insects which sometimes act as pest because it lives in holes in the house and act as a carrier of many harmful diseases so in order to control the spreading of the disease we have to control the population of ants.
<span>Every living thing needs food. Whether it makes it, or gets it from another living thing by eating that living thing. No living thing can survive without a food source. Food is where you get the energy for life.</span>
<span>The opossum is the only marsupial found on North America. It is found in many locations and is fairly commonly seen rummaging through waste and other leftover areas looking for things to scavenge. Opossums are known for taking any opportunity it can to find waste products and eat them.</span>