Which population of frogs is likely to have more changes after many generations? descendant Species 1: The frogs in the brown hills.
Descendant Species 2: The frogs in the green forest.
Both are equally likely to have changes in their structures.

Explain the reasoning for your answer

In which situations is the principle of cross-cutting relationship useful in determining relative age?

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen

List five ways we are indebted to phytoplankton