Author Question: The primary anthropogenic source of atmospheric carbon dioxide (CO2 ) is A) clearing and burning ... (Read 51 times)

casperchen82 · **on:** Jul 14, 2018

The primary anthropogenic source of atmospheric carbon dioxide (CO2 ) is

A) clearing and burning land.
B) rice farming.
C) respiration.
D) burning of fossil fuels.

Question 2

Ice storms occur when which of the following conditions prevail?

A) Rain drops circulate repeatedly above and below the freezing level in a cloud.
B) Moist, cool air is adiabatically cooled to the freezing point.
C) A cold front pushes warm, moist air to the freezing level in a cloud.
D) A layer of warm air is between two layers of cold air.