he process of a frog going from an egg to tadpole to young frog to adult frog is an example of Natural Selection.

Yes, correct!

Explanation:

A life cycle refers to the stages or changes that an animal goes through while it’s alive. A life cycle repeats itself (or goes in a circle) for each new generation of life.

There are lots of different kinds of animals living on earth and many different types of animal life cycles! Mammals (including humans) have babies that look similar to adults. Baby mammals grow bigger and bigger until they are full-grown.

i believe the answer is: b. mr. head had a long, tube-like face with a rounded open jaw and a short depressed nose.

this is because in the un-revised sentence it said that mr. heads face was long and tube-like, and he had a rounded open jaw. this is not a very grammatically correct because of how it seems to drag on with the and, replaced with, with, makes it sound more fluent in the description.

the correct answer would be d.