Environmental Science - Study Mode

[#316] Non-biodegradable pollutants are created by
Correct Answer

(C) humans

Explanation

Solution: The non-biodegradable pollutants are created by human itself. There are some products which cannot be degraded by the organisms in the soil. These products are plastics, pesticide, some fertilizers and some metallic components. So these products can take longs years to decompose in the nature or recycle in nature.

[#317] The conversion of a pond to a climax forest community is an example of
Correct Answer

(C) hydrarch succession

Explanation

Solution: The conversion of a pond to a climax forest community is an example of hydrarch succession.

[#318] Which of the following is a nonrenewable energy resource?
Correct Answer

(D) Coal

Explanation

Solution: Most non-renewable energy sources are fossil fuels: coal, petroleum, and natural gas. Carbon is the main element in fossil fuels. For this reason, the time period that fossil fuels formed (about 360-300 million years ago) is called the Carboniferous Period.

[#319] What type of energy is derived from heated groundwater?
Correct Answer

(B) geothermal

Explanation

Solution: Geothermal energy is the energy stored in the form of heat beneath the surface of the solid earth. According to the kind of sources in which geothermal energy occurs it can be litho geothermal (in hot dry rocks), igneous geothermal (out of magma) pneumo thermal (from hot gases) and hydrogeothermal (from groundwater).

[#320] All of the following are advantages of dams except
Correct Answer

(D) enhancing natural spawning patterns of fish

Explanation

Solution: All of the following are advantages of dams except enhancing natural spawning patterns of fish.