Increased heating, increased evaporation
Earth’s atmosphere is mainly composed of nitrogen (N) and oxygen (O).
This is further subdivided into four layers according to their temperatures.
Troposphere the layer closes to the Earth's surface with 10-15 km above its
surface. Stratosphere is 15 to 50 km above the surface of the Earth and its top
is warmer than its bottom. Mesosphere extends 50
to 80 km and becomes colder with increasing altitude. <span>And thermosphere is
80 km above the surface of the Earth to outer space and is very hot.</span>
Answer: The Precambrian Era comprises all of geologic time prior to 600 million years ago.
Explanation: The Precambrian was originally defined as the era that existed before the emergence of life in the Cambrian Period. It is known that life on Earth began by the early Archean and that fossilized organisms became more and more abundant throughout Precambrian time.
