Clouds form by convection because:
a. the rising air warms adiabatically, becomes saturated and condenses
b. topography forces the air upward.
c. the rising air cools adiabatically, becomes saturated and condenses.
d. None of these choices.
c
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Uncut forests or regenerated forests that have not been significantly impacted by humans or natural disasters for several hundred years or more are known as ____________________
Fill in the blanks with correct word
Which of the following aquatic ecosystems receives the vast majority of the global inputs of pollution?
a. estuary b. swiftly flowing stream c. deep-water ocean d. coastal parts of the ocean e. slow-moving river
A line of trees causes the wind to accelerate on the downwind side
Indicate whether the statement is true or false
Oxygen was one of the main gases in the early atmosphere
Indicate whether this statement is true or false.