Explanation:
Pressure with Height: pressure decreases with increasing altitude. The pressure at any level in the atmosphere may be interpreted as the total weight of the air above a unit area at any elevation. At higher elevations, there are fewer air molecules above a given surface than a similar surface at lower levels.
Russia ranks first in the world for the largest land area of any country.
The Earth is far enough away from the sun to not be burned like Mercury or Venus, but close enough to not be freezing cold like Mars. Earth's position in the solar system is very important for our survival.
The answer Blue Ridge Valley and Ridge Piedmont Coastal Plain
