What two purposes does semen have?

The brain is an example of which level of organization within an organism

Which describes John datiton observations of elements in any given compound

Do you think veterinary science or medicine would be an interesting area to work in? Discuss why or why not. Veterinary scientists need to have a strong interest and skills in science and research.

Think about the main job if your red blood cells. If red blood cells couldn't deliver oxygen to your cells, what would be the condition of your body tissues?

What is the name of a group of connected and related organisms?

Explain how a trait might seem to "disappear" for a generation, and then "reappear" in the following generation

What neurotransmitter is released by the axon of a sympathetic preganglionic neuron to communicate with the sympathetic postganglionic neuron?

Is the spinal cord part of the peripheral nervous system?

How many protons and neutrons does sulfur-35 have?

What is the smallest, most basic unit of life?