What natural geological event did Darwin experience when he was in South America?

Large ears for African elephants and trunks with two "fingers" are called ?

Small ears for Asian elephants and and one "finger" trunks are examples of ?

What is the main use for elephants' ears?

Which elephant is in the hotter climate?

Which elephant is in the cooler climate?

Choose the ancient ancestor of the elephants.

Choose the ancient ancestor of horseshoe crab.

Choose the ancient ancestor of the horse.

Members of a population must compete for food, water, and living space when overpopulation or overcrowding happens.

Changes in body parts, like ears and trunks, and behaviors, like camouflage , that help an organism survive in its environment are called?

_______ describes how well an organism can survive and reproduce in its environment.

? is a process by which organisms that are most suited to their environment survive and reproduce successfully.

All species, living or extinct, are Descended from ancient Common ancestors. This is the definition of?

The African and Asian elephants do not look exactly like their ancient ancestor the woolly mammoth. This is an example of ?

What was Darwin trying to get people to understand when he sketched his "tree of life"?