Chapter 3
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| natural resource | anything in the environment that is used by people
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| renewable resource | are either available or are naturally replaced in a relatively short time
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| nonrenewable resource | natural resources that are not replaced in a useful time frame
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| pollution | the contamination of earth's land or air
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| environmental science | the natural process in the environment and how humans effect them
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| clear cutting | the process of cutting down all the trees in an area at once
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| Selective cutting | cutting down only some trees in a forest and leaving a mix of tree sizes and species
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| Sustainable Yield | the amount of a renewable resource, such as trees that can be harvested regularly without reducing future supply
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| fishery | an area with a large population of valuable ocean organisms
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| aquaculture | the practice of raising fish and other water-dwelling organisms for food
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| Genes | structures in organisms cells that carry its hereditary information
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| extinction | the disappearance of all members in a species
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| endangered species | species in danger of becoming extinct
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| threatened species | species that could become endangered in the near future
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| habitat destruction | the loss of a natural habitat
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| habitat fragmentation | breaking larger habitats into smaller, isolated pieces
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| poaching | the illegal killing or removal of wildlife from their habitats
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| captive breeding | the mating of animals in zoos or wildlife preserves
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| keystone species | a species that influences the survival of many other species
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| biodiversity | the number of different species in an area
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| taxol | the substance that protects the Pacific Yew Tree
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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.
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.
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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