Answer: B
Explanation:
In Active transport, an input of energy in the form of ATP is needed to transport substances against the concentration gradient, I. E it allow the movement of molecules from an area of low concentration to one of higher concentration. And hence it is called active transport because energy is required to drive this process.
Active transport is the opposite of passive transport, where molecules move from a region of higher concentration to a region of lower concentration without the input of ATP.
This question related to the Doppler effect, which states that the incident frequency of waves from a moving source is different from the actual frequency. The point where the actual frequency is observed is when the source is right next to the observer.
Answer: Mutations are changes to an organism's DNA that create diversity within a population by introducing new alleles. Some mutations are harmful and are quickly eliminated from the population by natural selection; harmful mutations prevent organisms from reaching sexual maturity and reproducing.
Explanation:
Answer: compost
Explanation:
i looked it up and i'm pretty sure it's compost