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19 Cards in this Set
- Front
- Back
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3 enviormental problems the increasing world population is causing
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1pollution
2acid rain 3high expand of cities |
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what percentage of the earths suply is water
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3%
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define natural resource and give examples
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any type of material or energy that humans use to meet their needs.water air trees
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define population density
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the measure of the number of people in a given area
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is population density greater in a city or a suburb explain your answer
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in a city because more people live there
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name two affects of our increasing demand for land
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1less trees
2animals dead or forced to find new homes |
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define renewable resource
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a resource that can be used over and over again
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define nonrenewable resource and give 3 examples and explain y
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once gone all-ways gone.
1sunlight-it wont burn out for another 4 billion years 2trees-they grow everywhere we have to stop cutting them down 3water-the water cycle keeps it here |
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name 3 nonrenewable resources
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oil coal natural gas
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define pollution
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letting harmfull things into the ecoysystem
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define biodiversity
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number of lightforms within a biom
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name two causes of air pollution
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cars factories
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name two causes of water pollution
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chemicals litter
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define conservation
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conserving natural resources
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define sustainable practice
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using a resource without using it up
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explain each
1endangered species- 2clean air act- 3clean water act- |
1protect endangered species
2prevents air pollution 3keeps water clean |
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name a sustainable practice used for each
1farmers- 2forestry work- |
1natural fertilizer, ladybugs
2replant trees |
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name 4 types of alternative energy
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1geo thermal
2wind 3water 4lightening |
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name 2 ways people can reduce waste and pollution
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1clean up
2recycle |
