If all the plants of the world die, all the animals will also die due to shortage of:

Options

A. Cold air
B. Food
C. Oxygen
D. Shelter

Answer

B

Explanation

The food chain would collapse. Some suggest running out of oxygen but the atmosphere is huge (about 80% of the total mass of the atmosphere is contained in the first 6-7 miles over the surface of the earth) and contains 20% oxygen. Animals primarily inhabit the surface of land (plus a good bit of ocean creatures) so they are not likely to be able to consume all the oxygen before starving.