Choose the letter of the best answer. Write the chosen letter on a separate sheet of paper. 1. Which of the following is NOT one of the four subsystems of the Earth? A. biosphere C. water sphere B. hydrosphere D. geosphere 2. All of the waters, including subsurface and atmospheric water comprise the Earth. Which geological subsystem best label the statement? A. the geosphere C. the biosphere B. the hydrosphere D. the atmosphere 3. Earth contains all living organisms including those on the land, in the water and air. Which subsystem best describes the statement? A. biosphere C. atmosphere B. hydrosphere D. geosphere 4. Which subsystem suits the statement, “Global ecological system interacting with each other"? A. biosphere C. hydrosphere B. geosphere D. atmosphere 5. What subsystem will network with biosphere for photosynthesis to take place? A. atmosphere C. hydrosphere B. geosphere D. biosphere 6. Oxygen, water vapor, nitrogen, and other gases help organism to survive. Which Earth sphere contain these materials? A. biosphere C. hydrosphere B. atmosphere D. geosphere 7. Which term is used to describe the thin layer of solid rock that makes up the outermost part of the Earth? A. core C. mantle B. crust D. biosphere 8. Among the subsystems, which is composed of a mixture of gases that surrounds the Earth? A. nitrogen C. biosphere B. atmosphere D. kingdoms 9. The atmosphere of the Earth is composed of nitrogen and Oxygen and other gases. A 0% and 100% C. 78% and 21% B. 21% and 78% D. 505 and 505 10. In what subsystem of the Earth are the rocks and mineral found? A. atmosphere C. hydrosphere B. biosphere D. geosphere

Answers: (reviewhin niyo pa)

1. C
2. B
3. A
4. A
5. A
6.B
7.B
8.B
9.C
10.D
11.D
12.C
13.A
14.B
15.D

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