The most abundant greenhouse gas in the earth's atmosphere is:
a. carbon dioxide (CO2).
b. nitrous oxide (N2O).
c. water vapor (H2O).
d. methane (CH4).
e. chlorofluorocarbons (CFCs).
c
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Net primary productivity
a. is the rate at which producers manufacture chemical energy through photosynthesis b. is the rate at which producers use chemical energy through respiration c. is the rate of photosynthesis plus the rate of respiration d. is the rate at which producers use photosynthesis to produce and store chemical energy e. is the rate at which producers use photosynthesis to produce and store chemical energy minus the rate at which they use this energy through aerobic respiration
Explain how it is possible for weathering to take place far below the surface of bedrock
What will be an ideal response?
What is the term for ocean components not accounted for by the weathering of continents?
a. Conservative constituents b. Excess volatiles c. Nonconservative constituents d. Trace elements
The ethnolinguistic diverse province of southern China where many non-Chinese languages are spoken within close proximity to each other is
A) Sichuan B) Ningxia C) Yunnan D) Manchuria E) Gansu