The level of free convection is where:
A) moisture content in the atmosphere becomes too heavy to lift.
B) air becomes negatively buoyant and rises by itself.
C) air becomes positively buoyant and rises by itself.
D) usually occurs only early in the morning.
Answer: C
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a. a cold front. b. a warm front. c. orographic lift. d. all of these
There is some evidence that increases in greenhouse gas concentrations are responsible of the vast majority of global warming over the last century.
Answer the following statement true (T) or false (F)
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A) AMP B) ADP C) ATP D) none of these
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a. True b. False Indicate whether the statement is true or false