The atmosphere contains about 5.2 x1015 t of air. What mass in metric tons of carbon dioxide is in the atmosphere if the concentration of CO2 is 395 ppm?

Explanation:

ppm is a unit of concentration that expresses the mass of a component (solute) in 1,000,000 units of mass of a mixture (solution).

Thus, 395 ppm means 395 tons of CO₂ in 1,000,000 tons of air.

To determine the amount of CO₂ in 5.2 × 10¹⁵ tons of air, multiply the amount of air by the ppm concentration of CO₂ divided by 1,000,000 (10⁶):

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be