Environmental Science MCQs

441. Which of the following helps to explain why even though northern latitudes experience 24 hours of sunlight on June 22, they are not warmer than latitudes further south?

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A. Solar energy is spread over a larger area in northern latitudes
B. Some of the sun’s energy is reflected by snow and ice in the northern latitudes
C. Increased cloud cover reflects solar energy in the northern latitudes
D. Solar energy is used to melt frozen soil in the northern latitudes
✅ The correct answer is option E.
All of the above

443. At middle latitudes, the base of an altostratus or altocumulus cloud would generally be found between:

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A. 200 and 6,500 feet
B. 6,500 and 23,000 feet
C. 23,000 and 43,000 feet
D. Above 43,000 feet
✅ The correct answer is option B.
At middle latitudes, the base of an altostratus or altocumulus cloud would generally be found between: 6,500 and 23,000 feet.

447. Noise is _______________

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A. Huge sound
B. Sound of vehicles
C. Undesirable and unwanted sound
D. Sound of crackers
✅ The correct answer is option C.
Noise is disordered sound. Music and noise are both mixtures of sound waves of different frequencies. The component frequencies of music are discrete (separable) and rational (their ratios form simple fractions) with a discernible dominant frequency.

448. An association between two individuals or populations where both are benefitted and where neither can survive without the other is

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A. competition
B. commensalism
C. mutualism
D. protocoperation
✅ The correct answer is option C.
An association between two individuals or populations where both are benefitted and where neither can survive without the other is mutualism.

449. Which of the following is not a reason why water warms and cools much more slowly than land?

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A. Solar energy penetrates more deeply into water
B. Heat energy is mixed in a deeper layer of water
C. Water has a higher heat capacity
D. A portion of the solar energy that strikes water is used to evaporate it
✅ The correct answer is option E.
Water warms and cools much more slowly than land because it takes more heat to raise the temperature of a given amount of soil 1oC than it does to raise the temperature of water 1oC.

450. What is the major cause of diminishing wildlife number?

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A. Felling of trees
B. Cannibalism
C. Habitat destruction
D. Paucity of drinking water
✅ The correct answer is option C.
The reasons are deforestation, pollution, killing, over exploitation etc. The most important among them is deforestation or destruction of their natural habitat because it will affect the species (flora and fauna) of complete area and not only the few organisms.