Which factor has the least effect on the shape of the overall geothermal gradient?
A) loss of heat at the surface to the hydrosphere, atmosphere, and space
B) increasing temperature with compression of rock at high pressure
C) type and composition of rock in the mantle
D) heating of the lower mantle by the hotter core
Answer: C
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Life as we know it could not exist without ____________________ in the stratosphere
Fill in the blanks with correct word
Adding more carbon dioxide to the atmosphere causes the concentration of carbonates in the ocean to
A) increase. B) decrease. C) stay the same because of a negative feedback mechanism. D) stay the same because of a positive feedback mechanism.
What is hypoxia?
a. The increase of carbon dioxide in an area b. The depletion of free oxygen in an area c. The depletion of nutrients in an area d. The increase of nitrogen in an area e. The increase of free oxygen in an area
Lobbying, legal action, and campaign funding are all means used by ________ to influence governmental environmental policies.
a. the legislative branch b. the public sector c. social science studies d. the scientific community e. the judicial branch of government