Question

what is the primary source of energy for most ecosystems? *
energy pyramid
bacteria & fungi
decomposers
recycled nutrients
snake
tertiary consumers
0.1%
lost energy as heat
frog
secondary consumers
1%
grasshopper
primary consumers
10%
plants
primary producers
100%
sunlight
water
soil
air

Explanation:

Plants, the primary producers in most ecosystems, use sunlight in photosynthesis to convert carbon - dioxide and water into organic compounds and oxygen, providing the base of the energy pyramid. Thus, sunlight is the primary energy source.

Answer:

A. Sunlight