The very first hominins date to about __________ years ago.

What is the difference between a paleontologist and an archaeologist?

Altruistic behavior is

Two unrelated male baboons work together to guard a female in estrus to keep away a more dominant male. This is an example of

What is the basic idea of the theory of reciprocal altruism?

The oldest hominin is

What is a diastema?

Radiometric techniques provide researchers with the ability to

An example of associative learning is

Fossilization of bones occurs when