Answer:
the correct answer would be A. Mass extinction involves many species over a short period of geologic time.
Explanation:
A. This is an endergonic reaction because the free energy of the reactant is lower than the free energy of the products.
True.....................................................
Actually, its chance is 25%. A grey cat holds the alleles BW. A grey cat (BW) crosses with a black cat (BB). The percentage is 25% because the allele, “W” is present two times.