1 any substance relating to or originating from a living organism
2 a natural resource that can be replenished via natural processes
3 the effect of altering the natural environment, mostly by overpopulation, over-cultivating, altering the natural flow of water, and introduction of non-native plant life; degrading the soil to the point it can no longer sustain life causing dry
4 the act of promoting the responsible, renewable consumption of the natural resources of the earth to protect the environment and its natural resources from contamination or depletion
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5. the often toxic by-product produced by various industrialized activities that are usually very harmful to the environment and cause contamination
6. the process by which a society is transformed from a pre-industrial state to an industrial one, often causing a rise in pollution and ill effects on the environment
7. causing a plant or animal species or organism to no longer exist, usually due to over-hunting or destruction of an ecosystem
8. to use a resource via methods that do not deplete the supply of the resource
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