Random changes in allele frequency in a population are usually called genetic drift. The reason why this is the answer is because it is a very specific word which is used to describe exactly that - random changes in allele frequency.
All the other cases; answers, here aren't correct and don't apply.
First one is A
Second one is B
Hope this helps !
Answer:
option b is correct
Explanation:
aerobic respiration produce 38 ATP per glucose molecule while anaerobic respiration produce only 2 ATP per glucose molecule
