Answer:
I think it is called selective breeding, I don't think it is called that but hope this helps
Biotic Factors are any living components that affect other organisms, and since soil is not alive (soil is an abiotic factor) then you can eliminate A., B., and C. D is the answer choice that has only biotic examples.
True...................................
Answer:
it is 180 million years old
The correct answer is C. Males have a y and X chromosome making it easier for them to inherit diseases and mutations. Females have two X chromosomes which means that most of the time, they only carry the mutation rather than have symptoms such as color blindness. I hope this helped!