Question 1
What is the source of the energy that powers the Earth system?
◦ the Sun
◦ heat from Earth's interior
◦ both A and B
◦ none of the above
Question 2
Which of the following is
not a system?
◦ the Pacific Ocean and the west coast of North America
◦ the biosphere
◦ soil, plants, rock, soil organisms, and animals
◦ the study of minerals