Question

how are trees an energy source

Answer 1

Of the renewable energy sources, 77% comes from bioenergy, of which 87% is woody biomass from trees and shrubs. Using trees for energy has a huge potential, as plants efficiently convert solar energy into biomass, which is easier for people to harness and store than other energy sources like solar, wind and geothermal.

Answer 2

Trees provide us energy indirectly,by taking sun's energy to ,for photosynthesis and then converting it into the starch ,which we takeas food .