Answer:
The air near the earth’s surface consists of 77 percent nitrogen and about 21 percent oxygen.
Explanation:
I hope this helps
there is also a bit of Carbon Dioxide
Orographic lift occurs when an air mass is forced from a low elevation to a higher elevation as it moves over rising terrain. As the air mass gains altitude it quickly cools down adiabatically, which can raise the relative humidity to 100% and create clouds and, under the right conditions, precipitation
Because patches of thickened skin in the embryos created special cells known as columnar cells