Which of these is a starting point for primary succession?

a. a neglected yard
b. none of these is a starting point for primary succession
c. a surface exposed by a retreating glacier
d. abandoned farmland
e. an abandoned city


Answer: c. a surface exposed by a retreating glacier

Environmental & Atmospheric Sciences

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Most of North America's wind potential is located offshore.

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

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Volcanic gasses and aerosols can create an acidic smog called _______________, which poses a threat to life and health

Fill in the blank with correct word.

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A growing degree day for a particular crop is defined as a day on which the mean daily temperature is ____ degree above the base temperature (also known as the zero temperature)—the minimum temperature required for growth of that crop

a. one b. two c. three d. four e. five

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Conventional waste incineration, at moderate temperatures,

A. completely destroys toxic organic chemicals. B. has the advantage of not producing harmful gases. C. is particularly effective for paper and similar flammable materials. D. All of the choices are correct.

Environmental & Atmospheric Sciences