The most common element in the earth's crust is

A. iron.
B. aluminum.
C. oxygen.
D. nickel.


Answer: C

Environmental & Atmospheric Sciences

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Frost action involving water repeatedly freezing and thawing in cracks and pores in rocks is a type of chemical weathering

Indicate whether the statement is true or false

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Over the past 30 years in the United States, nuclear power production

A) has increased by more than 200%. B) has increased by 50%. C) has remained steady at around 100 plants. D) has declined from nearly 100 to now about 70 plants.

Environmental & Atmospheric Sciences

What type of reaction occurs when oxalosuccinate is converted to a-ketoglutarate in step 3 of the citric acid cycle?

A) decarboxylation B) dehydration C) oxidation D) reduction

Environmental & Atmospheric Sciences

Southeast Asia's great river, the __________, is one of the world's most prolific fisheries and a potential source of hydroelectric power

Fill in the blank(s) with correct word

Environmental & Atmospheric Sciences