6. Streams always flow

A. downhill
B. toward the ocean
C. southward
D. toward the poles

Marianne is comparing two animals: a fruit fly and a fruit bat. she asks, "do a fruit fly and a fruit bat share a common ancestor in their evolutionary history? " according to evolutionary theory, what is the answer to marianne's question?

What factors contribute to the effect an environmental toxin has on the human body?

The term facultative anaerobe refers to an organism that