Question A. Name the four spheres or sub-systems of the earth .(1 point)

Question B.
Explain how the four spheres interact with water cycle processes.(1 point)

How does the motion of particles in a gas change as the gas cools

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures