Question 20 Which of the following pairs of clouds are the primary precipitation

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Question 20 Which of the following pairs of clouds are the primary precipitation-producing ones? OA. Stratocumulus and cumulonimbus B. Altostratus and nimbostratus OC. Nimbostratus and cumulonimbus D. Stratus and nimbostratus Question 21 Which of the following statements concerning clouds is true? A. Some clouds, like cirrus, are composed of small ice crystals. B. Some clouds are composed entirely of small liquid water drops C. Some clouds contain both small liquid water drops and ice crystals D. All of the above are true. O E. Only A and Bare true. Question 22 Doppler radar A. Measures the sound waves emitted by thunderstorms B. Operates in the visible part of the electromagnetic spectrum C. Can easily observe a shelf cloud far away from the radar. D. Measures the change in frequency of reflected electromagnetic radiation. 2 points Save Answer 2 points Save Answer 2 points Save Answer

Explanation / Answer

Question 20
Which pf the following pairs of clouds are the primary precipitation-producing ones?
Answer: C. Nimbostratus and cumulonimbus
Nimbostratus are dark and low level clouds that is generally lies below 2000 meters.
Cumulonimbus are tall and large clouds lie at height 6500 feet to 60000 feet.

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