Question

What does it mean to say the Earth works in a cycle.

a. No new matter comes in
b. The amount of energy available is fixed and only changes forms from organism to organism
c. Nutrients are given from the sun and are never recycled. Only energy is recycled

Answer 1

Answer = B

If you look at A, it obviously is not right. And C doesn’t make sense either

Answer 2

A. No new matter comes in