Why do volcanic eruptions cause cooling for the weeks/months following the eruption?
A) increased sulfur in the atmosphere reflect energy from the sun
B) volcanic ash acts as a shield to block the sun's energy from reaching earth
C) carbon dioxide is emitted during the eruption
D) both A and B
Answer: D
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a. Africa b. Australia c. South America d. China e. North America
Cumulonimbus clouds indicate unstable atmospheric conditions. What stops the upward growth and causes the top of a cumulonimbus cloud to flatten out into an anvil??
What will be an ideal response?
There are _________ regions that together define the United States and Canada.
-five -two -nine -six -eleven