Pressure and temperature decrease with increased altitude within Earth's atmosphere until reaching the tropopause layer (between Troposhere and Stratosphere). At this point temperatures stop dropping and remain steady for a certain amount of time. What is the main reason this occurs? A) There is no wind. B) The molecules are so far apart. C) There are no clouds in the air. D) There is not enough energy to have convection currents.

The main reason is that there is not enough energy to have convection currents.

Option: D

Explanation:

Tropopause is the area in between two atmospheric layers troposphere and stratosphere. This area is full of cloud. Above this layer all the aero planes fly. Here the temperature is fixed. The normal lapse rate that is 6.4 degree centigrade fall of temperature per 1000 meter stops here.

Here all birds used to fly. Temperature, air pressure which decreases with increasing height or altitude stops here. After this area again temperature start increasing with altitude. The height of troposphere from the mean sea level is almost 14 kilometers.

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explanation:

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