Answer:
Option-(B):Cycling of matter and energy.
Explanation:
Cycling of matter and energy:
On our planet there are a number of elements or materials present which make up the matter and energy system, as they involve the connection between on entity with another. There is a net flow of energy between any two systems, giving more space and chances for the different species to live or survive. And, that is the one of the reasons which makes life on Earth possible from millions of years, as energy is kept conserved.
