<span>The birthrate and the death rate were about equal.</span>
Areas with mountains is the answer
Answer:
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Explanation:
The troposphere is wider at the equator (10mi) than at the poles (5mi). ... Water vapor concentration varies from trace amounts in Polar Regions to nearly 4 percent in the tropics. Most prevalent gases are nitrogen (78 percent) and oxygen (21 percent), with the remaining 1- percent consisting of argon,).
The biosphere is composed of all living organisms
