If you laid out geologic time as if it occurred in a single calendar year, when would you expect human history to be recorded?

Zoom out! What kind of river cuts through Canyonlands?

This term refers to the junction between the axon of one neuron and the dendrites of another neuron.

A dark brown pigment produced by some cells of the epidermis:

Which of the following is NOT a function of the skeletal system?

What is a likely explanation for the changes we see in the fossil record (like at House Range) at this time?

Striated and involuntary muscle tissue, with intercalated discs:

Cardiac, vasomotor, and respiratory reflex centers are located in the:

Gustatory cells are found in:

The pointed area at the inferior end of the sternum is called the