Answer:

Explanation:
Given


Required
Determine the Net Primary Productivity (NPP)
NPP is calculated as follows;

Substitute values for GPP and R


<em>Hence, the Net Primary Productivity is </em>
<em></em>
42km = 26.098 miles. Hope this helps.
Answer:
Good ozone is found in the stratosphere, far above the Earth's surface. At that height, it absorbs and scatters ultraviolet (UV) radiation from the Sun, particularly the most dangerous UV-B and UV-C forms. Ozone is the planet's natural sunscreen.
Explanation:
420x6/7 = 360 starting amount
420-360 = 60 interest
60/360 = 16.67%