| A | B |
|---|
| environmental science | The study of how the natural world interacts with the modern human world in terms of resources and ecological health |
| ecology | The study of the interactions of living organisms with each other and their environment |
| agriculture | The raising of livestock and crops for human use |
| natural resource | Any natural material that is used by humans, such as petroleum, water, animals, etc. |
| pollution | An undsirable change in the natural environment that is caused by the introduction of substances that are harmful to living things or by excessive heat, light, radiation, etc. |
| biodiversity | The variation of living things in a given area, considering number of species, genetic variation, complexity of interactions, etc. |
| law of supply and demand | The law of economics that states that as the demand for a good or service increases, the value also increases |
| ecological footprint | A calculation that shows the productive area of earth needed to support one person; this often varies greatly among countries |
| sustainability | The condition in which human needs are met in such a way that the human population could exist indefinitely |
