Respuesta :

Biomass is organic, meaning it is made of material that comes from living organisms, such as plants and animals. Biomass contains energy first derived from the sun: Plants absorb the sun's energy through photosynthesis. 
Answer - photosynthesis

Answer: Photosynthesis.

Explanation:  

Biomass can be defined as the energy that is derived from the sun. Plants absorb the energy from the sun and converts it into chemical energy by the process known as photosynthesis.

Biomass can be burnt to produce heat and energy, this heat is converted into electricity. This biomass can be used by  processing the chemical energy into biofuel.