The model represents the oxygen cycle on Earth. If widespread habitat destruction and urbanization continues, how might we expect this model to change, as represented by flux?

You can watch static electricity in action by rubbing an inflated balloon against your hair. your hair will actually stand on its end! it does this because each hair becomes charged, and they all repel one another.

Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.

The process of a material going through a change of state from a gas to a liquid