Conserve/Conservation: to prevent the waste or loss of natural resources
Filtration: the process of passing through a filter
Freshwater: water that does not contain salt
Natural Resource: materials or substances such as minerals, forests, water, and fertile land that occur in nature and can be used
Nonrenewable Resource: any natural resource from the Earth that exists in limited supply and cannot be replaced if it is used up
Over Consumption: the act of consuming something to excess
Pollutant: any substance, as certain chemicals or waste products, that renders the air, soil, water, or other natural resource harmful or unsuitable for a specific purpose.
Potable Water: fit or suitable for drinking
Preserve/Preservation: maintain in its original or existing state
Renewable Resource: any natural resource that can replenish itself naturally over time