C. I learned this in 6th grade. The desert is dry, and has very low resources.
Answer:
C. elevation
Explanation:
A physical map depicting when it shows how much above or below sea level a physical feature is an elevation.
Generally, elevations are represented on maps by lines of contour, which typically connect points having the same elevation. Also, elevations are shown on a physical map by using bands of color to connect points.
In Geography, elevations are represented or measured in feets or meters
<span>C. the rate of primary productivity
</span>Since primary productivity is measured in three ways (A<span>mount of CO2 used,</span>
<span>rate of sugar formation and </span><span>oxygen production) these don't control the climate, but can change it. Unlike the other options.</span>
