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29 Cards in this Set
- Front
- Back
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Savannah
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Africa
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Rangeland
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Austraila
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Steppe
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Asia
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Pampas
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South America
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Prairie
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North America
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How many degrees north and south of the equator are the Tropic of Cancer and the Tropic of Capricorn located?
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23 and a half
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Number of degrees is the same as...
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axes of the earth
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Between the tropics is the only place on earth where the sun....
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hits directly about at high noon (ninety degrees)
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What fraction of the earth's land is grassland
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1/3 or 33%
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About what percent of the original prairie in the United States still remains a prairie today?
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less than 1%
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What is the difference between a temprate and tropical grassland?
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Tropical has 2 seasons (wet/dry)
Temprate has all four seasons |
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Why are fires important to a prairie?
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1. decay after fire provides nutrients
2. remove dead material plants get sunlight |
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In what section of Wisconsin did prairies exists?
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southwest
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In what section of the prairie did the tall grasses grow?
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eastern
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In what section of the prairie did the short grasses grow?
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western
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What factor determined if the tall of short grasses grew in an area?
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water
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Name two characteristics besides fire to tell about prairies...
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1. no trees/ mostly grasses
2. periods of drought 3. flat lands no rolling hills |
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Name two reasons the prairie soil in the U.S. is so good...
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1. from the glacier from Canada
2. ants churn to remove nutrients of fires brings up nutrients |
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Name two prairie plant adaptations and their functions...
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1. thick stem- holds in water for drought
2. lobed/ divided leaves for sunlight |
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Name two prairie animal adaptations and their functions...
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1. birds nest on ground because no trees
2. prairiedogs burrow to create shelter |
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Earthworms are important in a forest because they churn up the soil bringing deep soil to the surface. Why are there less earthworms living in a prairie than a forest?
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Because the prairie can get dry and earthworms need to be moist.
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What takes over the churning up of the soil in a prairie since there are few earthworms?
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ants
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The land that was once covered with prairie before the pioneers arrived is mainly used for what purpose today?
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farmers, towns, roads
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What famous scienctist first proposed that all people should develope a sense of how and why to protect the land and what grows on it?
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Aldo Leopold
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What might be the advantage of raising cattle on land with a prairie restoration growing on it?
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The advantage of raising cattle is it will help fertilize the soil. (manure)
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What does "Land Ethic" mean according to Aldo Leopold?
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It means that you should treat people right so then treat nature like you would technecially treat people the same way. Also preserve and respect but share your land with nature.
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Aldo Leopold about him...
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1st person conservation, grew up in Iowa
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Dust bowl when?
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1930s
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1. plowing practices
2. New plowing technique 3. Latest technique |
1. included turning the soil over and over because no water
2. turn soil only once so roots could hold the soil together 3. No-till farming no plowing just planting |
