Question

1

What is the original source of energy for most ecosystems?

A.grass
B.humans
C.the sun
D.heat

Answer 1

C,The sun

Step-by-step explanation:

the vast majority of energy in food webs originates from the sun

Answer 2

C. The sun

Step-by-step explanation:

The sun provides energy for the plant to do photosynthesis. Since all animal species depend on plants qnd the sun helps the plants, the sun is the original source of energy.