What are the components of Earth's climate system? (Choose all that apply.)

The thin layer of gases that surrounds Earth is called the

Which gas is most abundant in Earth's atmosphere?

Ground water, lakes, rivers, streams, oceans, ice, and water vapour make up Earth's

True or False? Earth's polar ice caps melt completely every summer and re-form in in winter.

The region of Earth where life exists is called the

What processes increase the greenhouse gas concentration in Earth's atmosphere? Choose all that apply.