Which of the following is an example of an organism maintaining homeostasis?
a.
a boy riding a bike
b.
a cat grooming itself
c.
a bear nursing her cubs
d.
a man sweating while he runs

If we relied solely on the nonrenewable resources found in the u.s., which one would we run out of first at current usage levels? a. natural gas b. oil c. uranium d. coal

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?

The amount of potential energy possessed by an elevated object is equal to what?