Answer:
Mutations and sexual reproduction increase genetic variation in a population. Natural selection occurs when environmental pressures favor certain traits that are passed on to offspring. ... Individuals may mutate, but natural selection acts by shifting the characteristics of the population as a whole.
Explanation:
The answer is B
Explanation: RNA is single stranded and contain uracil
Ureter, the structure that carries urine from the kidney to the bladder is called Ureter
Answer:
This is a plasmatic membrane (cell membrane) that bounds a cell.