The greatest planetary pool of nitrogen is
a. the atmosphere
b. the hydrosphere
c. the lithosphere
d. the biosphere in fossil fuel deposits

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy.work depends on the square of the change in potential energy.work is equal to the negative of the change in kinetic energy.work is equal to the square of the change in kinetic energy