People cut down the tropical rainforests and one of the main reason why they do it is so that they can have roads there instead.
Answer:
B. massive volcano eruptions occurred frequently 80 million years ago
Answer:
The main gases which play an important role in maintaining the temperature of the atmosphere are carbon dioxide and the water vapours. As the altitude increases, the concentration of these gases in the atmosphere decreases (due to gravity), which consequently results in decrease of temperature, which means there is not enough CO2 and water vapours to keep increasing the temperature.
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That would be the rocky and appalachians
Answer:
C.......................................