The illustration above represents what concept?
A.) Natural selection
B.) Homologous structures
C.) Adaptation
D.) Variation
2.) A fossil that is characteristic of a particular span of geological time or a specific environment is called a(n):
A.) Index fossil
B.) Cast fossil
C.) Petrified fossil
D.) Mold fossil
3.) How is artificial selection different from natural selection? Select the best answer from the choices below.
A.) In artificial selection, animals. that are more likely to survive reproduce.
B.) In artificial selection, members of a species must complete to survive
C.) In natural selection, people impact. which traits are passed on
D.) In artificial selection, humans choose which organisms reproduce.
PLEASE HELP!!!