Which of the following is the majority source (99%) of the energy that heats the Earth and all man-made structures? 

A)  coal 
B)  nuclear power 
C)  the sun 
D)  oil

Biomass Energy

Biomass energy involves producing energy by burning organic materials, such as wood, agricultural crops, and waste materials, in a process that can be more sustainable than fossil fuels.

Developing Countries

Nations with lower levels of industrialization, lower standards of living, and generally lower Human Development Index (HDI) scores compared to developed countries.