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Human Impacts
Topic 7, Lesson 3 and 4: Impacts on Land and Water Pollution
| Question | Answer |
|---|---|
| natural resource | anything naturally occurring in the environment that humans use |
| renewable resource | a resource that is either always available or is naturally replaced in a relatively short time |
| nonrenewable resource | a natural resource that is not replaced in a useful time frame |
| deforestation | the removal of forests to use the land for other reasons |
| erosion | the process by which water, ice, wind or gravity moves weathered particles of rock and soil |
| desertification | the advance of desert-like conditions into areas that previously were fertile; caused by over-farming, over-grazing, drought and climate change |
| sustainable | using a resource in ways that maintain it a certain quality for a certain period of time |
| resource | a source of aid or support that may be drawn upon when needed |
| sewage | the water and human wastes that are washed down sinks, toilets, and showers |
| sediment | small, solid pieces of material that come from rocks or the remains of organisms: earth materials deposited by erosion |
| thermal pollution | a type of pollution caused by factories and power plants releasing super heated water into bodies of water |
| distributed | spread out |
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