I. Multiple Choice. Direction: Write the letter of the best answer.

1. All of the following are abiotic factors of the environment except:

A. Air
B. Sunlight
C. bacteria
D. soil

2. The corals, plants, bacteria and fungi, comprise a:

A. Niche
B. habitat
C. community
D. ecosystem

3. What do you call a group or collection of similar organisms living in a given area?

A. ecotypes
B. organism
C. population
D. community

4. What is the primary source of energy on earth?

A. Water
B. Wind
C. sun
D. soil

5. It refers to the place where an organism lives

A. ecosystem
B. niche
C. ecology
D. habitat

6. What is the branch of science that deals with the study of the interactions between the living and the non-living components of the environment?

A. Entomology
B. Economics
C. Ecology
D. Environmental Science

7. The role played by an organism in an ecosystem is called as:

A. habitat
B. niche
C. Decomposer
D. producer

8. The rivers, lakes, deserts, and Forest are examples of:

A. Community
B. Populations
C. ecosystem
D. organism

9. The biggest Biosphere II experiment in history was conducted in:

A. US
B. Japan
C. Canada
D. Australia

10. The part of the biosphere that is composed of the body of water:

A. Atmosphere
B. Hemisphere
C. Lithosphere
D. Hydrosphere ​