An ecosystem is a system of biotic and abiotic factors that interact with their physical environment.

Earth Day is an annual event held on April 22 to raise awareness about environmental issues and encourage individuals to take action.

Climate change is an unusual change in average weather patterns in a region over a long period of time.

Carbon footprint is the total greenhouse gas (GHG) emissions caused by a person, place, or thing.

Pollution is any substances in water, soil, or air that damages the natural characteristics of the environment.

Public health is the science and art of promoting and protecting health and well-being, preventing disease and injury, and improving health.