Related Topics:6. The amount of energy used by human society depends on many factors.4. Various sources of energy are used to power human activities.
Associated Grade Levels:5-67-89-1011-12
4.3 Fossil and biofuels are organic matter that contain energy captured from sunlight.
4.5 Humans generate electricity in multiple ways.
6.6 Behavior and design affect the amount of energy used by human society.