I. Multiple Choice. Choose the letter of the correct answer. Write your answer in your activity notebook.

1. It is a multidisciplinary science which combines physics, chemistry, biology, medical, health science, life science, agricultural science, forestry, public health engineering and so on.
a.Environment Science c. Environmental issues
b.Ecosystem d. Ecology

2. It indicates the realm of living organisms and their interactions with environment, viz atmosphere, hydrosphere and lithosphere.
a.Lithosphere c. Biosphere
b.Hydrosphere d. Atmosphere

3. It is the outer mantle of the solid earth. It consists of minerals occurring in the earth’s crusts and the soil e.g. minerals, organic matter, air and water.
a.Lithosphere c. Biosphere
b.Hydrosphere d. Atmosphere

4. These are the components of non-living factors that impact an ecosystem. Abiotic factors are part of the ecosystem and can impact the associated living things, but they are not living
a.Biotic c. Biosphere
b.Minerals d. Abiotic

5.It is a part of earth where it sustains life and serves as hostile of outer space.
a. Lithosphere c. Biosphere
b. Hydrosphere d. Atmosphere
6.These are elements of environment focus on space, landforms, water bodies, climate soils, rocks and minerals.
a.Cultural c. Physical
b.Biological d. All the Above.

7. It is the study of the multitude interaction between human and world around them, living and nonliving.
a.Biology c. Ecology
b.Environmental Science d. Ecosystem

8. These are the living components of an ecosystem and sorted into three groups: producers or autotrophs, consumers or heterotrophs, and decomposers or detritivores.
a.Abiotic c. Biosphere
b.Ecology d. Biotic

9. These are elements such as economic, social and political elements are essentially man-made features, which make cultural milieu.
a.Biological c. Cultural
b.Physical d. All of the Above

10. How many percent (%) available as fresh surface water-rivers, lakes streams, and groundwater fit to be used for human consumption and other uses.
a.2% c. 1.5%
b.2.25% d. 1%
II. Identify the component of environment as ABIOTIC OR BIOTIC FACTORS. Write your answer in your activity notebook.