3. To claim that the rise of the Isthmus of Panama contributed to the evolution of different species of shrimp, would Dr. Knowlton need to establish that the east coast
and west coast shrimp species diverged before or after the rise of the isthmus?
Explain your reasoning.

Natalie had random hand movements when she was two months old. when she was six months old, she used to grab a block with her whole hand. now at the age of ten months, she can grasp the same block with her thumb and forefinger. this sequence of growth in her hand and finger movements is according to the pattern.

Compare the shapes of the bones of the human skull with the shapes of the bones of the human leg. how do the shapes differ? why are the shapes important?

Agroup of organisms that changes over time is said to