The theory of evolution proposed that a series of catastrophes or mass extinctions followed by repopulation could explain why species change over time
These are the only options to pick from ?
Answer:
More than 35 species of plains animals
Explanation:
In addition to more than 35 species of plains animals, there are some 3,000 lions and great numbers of spotted hyenas, leopards, rhinoceroses, hippopotamuses, giraffes, cheetahs, and baboons.
Answer:

Explanation:
Straight wings are dominant over curved wings
Let Straight wings : H
curved wings : t
smooth eyes are dominant to sparkling eyes
let smooth eyes = H
spark ling eyes = t
tan body is dominant to ebony body color.
Again; Let tan body color be H
Let ebony color be t
If flies that are heterozygous for all three traits are crossed;
we have HtHtHt × HtHtHt
Then the selected trihybrid traits for the cross will be (HHH,HHt, HtH, Htt, tHH, tHt, ttH, ttt)
We will realize that from the punnet square in the diagram below, the proportion of the offspring would you expect to be heterozygous for all three traits (i.e HtHtHt) is asterisk in the punnet square and will be 
= 