If you didn't forgot to put the letters in caps this is the explanation:
100% of the possible gametes will contain the a alelle.
possible combination of gametes all result in the same: ab or ab
Just to compare if the genotype was Aabb
The gametes would be : Ab or ab
C. an endangered species is one that is at risk of dying out, while an extinct species is one that no longer exists.
Answer:
biosphere is the answer bro