Response

loss of forests for other land uses deforestation

deserts expanding from overuse desertification

people moving from county to city urbanization

farms and small towns (country) rural areas

hills formed from blowing sand sand dunes

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Types of human pollution

Thermal pollution is any heating of natural water that results from human activity. (cooling water from power plants that is return to lakes or rivers).

Chemical pollution is when harmful chemicals are add to water supplies. (comes from chemical or agriculture plants).

Biological pollution is when live or dead organisms are add to water supplies. (waste water is human and animal waste that enter into our water supply).

Eutrophication is when increase nutrients has been added to the water. (Fertilizer).

Greenhouse effect

• gases in the atmosphere trap heat from the sun

• keeps Earth warm

• greenhouse gases: carbon dioxide, methane, water vapor,

• increase in greenhouse gases is causing climate change