<span>condensation to form liquid water, which then rained back down to form the oceans</span>
Answer: The earth layers and atmospheric layers are distinctly different.
Explanation:
The earth layers are made up of solid matter whereas the atmospheric layers are made up of gases.
The earth layers provide the base for the survival of diversity of living beings whereas the atmospheric layers only allow microbes which can survive in extreme temperature conditions.
The stratospheric layer of the atmosphere protects the living beings from the harmful radiations striking on the surface of earth and they are capable of causing mutation whereas the lithosphere or any other surface layer of the earth also absorb thermal energy from sun but does not provide protection against harmful affects of ultraviolet radiations.
It has the Nile river in the east, the Sahara desert and the Atlas Mountains which are in the west.
B. The curtains on the windows of a bedroom.
The rest of the choices are not man-made which would not be infrastructure.
