Unit 8 - Human Impact on the Environment
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| water pollution | contamination of water by waste matter or other material that is harmful to organisms that are exposed to the water
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| point-source pollution | pollution that comes from a specific site
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| nonpoint-source pollution | pollution that comes from many sources rather than from a single, specific site
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| thermal pollution | a temperature increase in a body of water that is caused by human activity and that has a harmful effect on water quality and on the ability of that body of water to support life
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| eutrophication | an increase in the amount of nutrients, such as nitrates, in a marine or aquatic ecosystem
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| potable | suitable for drinking
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| reservoir | an artificial body of water that usually forms behind a dam
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| urbanization | an increase in the proportion of a population living in urban areas rather than rural areas
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| land degradation | the process by which human activity and natural processes damage land to the point that it can no longer support the local ecosystem
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| desertification | the process by which human activities or climate changes make arid or semiarid areas more desertlike
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| deforestation | the removal of trees and other vegetation from an area
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| greenhouse effect | the warming of the surface and lower atmosphere of Earth that occurs when water vapor, carbon dioxide, and other gases absorb and reradiate thermal energy
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| air pollution | the contamination of the atmosphere by the introduction of pollutants from human and natural sources
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| particulate | a tiny particle of solid that is suspended in air or water
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| smog | air pollution that forms when ozone and vehicle exhaust react with sunlight
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| acid precipitation | rain, sleet, or snow that contains a high concentration of acids
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| air quality | a measure of the pollutants in the air that is used to express how clean or polluted the air is
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| conservation | the wise use of and preservation of natural resources
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| stewardship | the careful and responsible management of a resource
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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