Answer:
Symbiosis is a close relationship between two species in which at least one species benefits.
Explanation:
A ecosystem productivity is a rate of generation of biomass.’’I know this because it states.”In economy productivity refers to the rate of generation of biomass in an economy.This shows that the economy its usually expressed in units of mass per unit.
Answer:
A, chlorophyll; B, ATP is the correct answer.
Explanation:
I took the quiz and got it right.
5. System level
6. Organ level