Environmental Science
In an oil trap formed by an anticline, __________ accumulates on top, __________ in the middle, and __________ at the bottom.

oil, groundwater, natural gas
natural gas, oil, groundwater
oil, natural gas, ground water
ground water, oil, natural gas

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Environmental Science
The atmospheric greenhouse effect is produced mainly by the:

Absorption and re-emission of visible light by clouds
Absorption and re-emission of visible light by the atmosphere
Absorption and re-emission of visible light by the ground
Absorption and re-emission of infrared radiation by the atmosphere
Absorption and re-emission of ultraviolet radiation by the atmosphere

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