Environmental Science
The study of the air, water, and land surrounding an organism or a community, which ranges from a small area to Earth's entire biosphere; it includes the study of the impact of humans on the environment.
Ecology
The study of interactions between organisms and their environment.
Agriculture
The raising of crops and livestock for food or for other products that are useful to humans.
Natural Resources
Any natural material that is used by humans, such as water, petroleum, minerals, forests, and animals.
Pollution
An undesirable in the natural environment that is caused by the introduction of substances that are harmful to living organisms or by excessive wastes, heat, noise, or radiation.
Biodiversity
The variety of organisms in a given area, the genetic variation within a population, the variety of species in a community, or the variety of communities in an ecosystem.
Law of Supply and Demand
A law of economics that states that as the demand for a good or service increases, the value of goods or services also increases.
Ecological Footprint
A calculation that shows the productive area of Earth needed to support one person in a particular country.
Sustainability
The condition in which human needs are met in such a way that a human population can survive indefinitely.