Answer:
Energy Flow
Biomass
Step-by-step explanation:
Energy Flow is the movement of energy through an ecosystem.The cycle of energy is based on the flow of energy through different trophic levels in an ecosystem hence giving maintenance to the energy and nutrients in the ecosystem.
Matter is anything that has weight and can occupy space i.e it is said that matter has mass. Therefore, Biomass is the total mass of living or previously living organisms within a trophic level in an ecosystem.