In addition to carbon dioxide, which of the following is a greenhouse gas?
A. Carbon monoxide
B. Nitrogen
C. Methane
D. Oxygen
Answer: C
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Which of the following statements is true regarding high or low pressure for a parcel of air at the surface?
A. higher temperature, lower density, warmer air rises, higher pressure at surface B. lower temperature, higher density, cold air rises, higher pressure at surface C. higher temperature, higher density, warmer air rises, lower pressure at surface D. lower temperature, higher density, cold air sinks, higher pressure at surface
Forchhammer's principle explains ____
a. seawater pH b. seawater buffering capacity c. the carbonate cycle d. conservative seawater constituents e. the salinity gradient in the water column
Much progress in reducing atmospheric levels of lead pollution has resulted from ________
A) the development of new types of batteries that use lithium instead of lead B) new types of lead scrubbers on smokestacks that removed lead from the power plant emissions C) the elimination of leaded gasoline D) the switch from lead to graphite in pencils
The type of agriculture practiced near large cities, which includes producing fruits and vegetables, is called
A) sawah. B) truck agriculture. C) subsistence agriculture. D) truck farming. E) truck hybridization.