Compared to early hominid ancestors, modern humans have brains that are

A. larger and more rounded.

B. smaller and more rounded.

C. larger and more flattened.

D. smaller and more flattened.

5. If forests serve as important sinks for greenhouse gases, describe how past ice ages might have affected the concentration levels of carbon dioxide in the atmosphere.

Which group of organisms produces energy from sunlight and is also known as blue-green algae?

Imagine that a rancher has a herd of cattle with brown hides and short horns. All of his cattle are also relatively short in stature.

Weather describes the average conditions of an area over long periods of time? True or false

Which characteristics distinguish a law from a theory? Check all that apply. A law begins as a testable hypothesis. A law may be demonstrated mathematically. A law is a statement of fact. A law is only an explanation of observations.

What would happen is all receptor proteins were removed from the membrane of all liver cells?

Did the greatest changes in weight occur in cells with the steepest concentration gradients

Dogs have a reduced nonfunctional digit on their paws known as a dewclaw. What is this an example of? analogous structure homologous structure vestigial structure mutated structure

What relationships do you observe between the wind patterns and the surface currents?

The dictionary defines equilibrium as a situation in which forces