The principle hazard of microbursts to aircraft in the process of taking off or landing is

A) windblown sand and dust damaging jet engines.
B) sudden changes in lift and tailwinds.
C) Doppler radar.
D) lightning.


Answer: B

Environmental & Atmospheric Sciences

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Between 1800 and 2015, the percentage of the U.S. population living in urban areas increased from 5% to 81%.

Answer the following statement true (T) or false (F)

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In a typical climograph, a continuous line connects average monthly values to produce an annual ____________________ curve

Fill in the blank(s) with correct word

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The fact that a threshold is expected to exist with all poisons is related to the idea that:

A. some things you are exposed to are not absorbed B. some things are safe and non-toxic C. eventually as dose increases effect will diminish until very little added effect occurs with increasing dose D. there is some small dose for every compound that is expected to be safe

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