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Environmental pollution affects the life on earth and should be reduced as far as possible. We harm the nature and in turn, nature will harm us more. This should be stopped, our survival depends on this environment so care should be taken and its balance should be maintained. The environment is defined as the surroundings of a physical system that may interact with other systems by e:changing mass and energy. When there is an undesirable change in the surrounding that has harmful effects on plants and animals, it leads to environmental pollution.

1. Cosmic rays, such as gamma rays are a source of

a. Soil Pollution

b. Noise Pollution

c. Thermal Pollution

d. Radiation pollution

2. The presence of _______ in a water body is an indicator of water pollution.

a. Zygosporangium

b. E.Coli

c. Deinococcus radiodurans

d. None of the above

3. Lichens are good bioindicators for

a. Environmental radiation

b. Soil pollution

c. Water and air pollution

d. None of the above

4. Greenhouse gases are those that absorb and emit infrared radiation. Examples include _________

a. Nitrogen

b. Ozone

c. Argon

d. None of the above

5.__________ is an organism used to gauge the quality of an ecosystem.

a. Decomposers

b. Predator

c. Bio-remediator

d. Bioindicator

1 Answer

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Best answer

1. d. Radiation pollution

2. b. E.Coli

3. c. Water and air pollution

4. b. Ozone

5. d. Bioindicator

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