The most common element in the earth's crust is
A. iron.
B. aluminum.
C. oxygen.
D. nickel.
Answer: C
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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
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.
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
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