Animal Planet :: Map of World Biomes - 2 views
Earth Floor: Biomes - 4 views
The World's Biomes - 5 views
Ecological Succession - 0 views
A fresh look at Mount St. Helens | Earth | Science News - 0 views
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Life returns Some researchers feared the area north of the volcano would remain a sterile moonscape for decades. But scientists studying the blast-seared zone north of the peak found vegetation on the landslide within a few years,
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Nine years after the eruption, plants had returned to just over 10 percent of the hummocky terrain. Twenty years on, vegetation had expanded to cover about two-thirds of the deposit. Today, Frenzen says, about 80 percent of the once sterile area sports vegetation.
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Some of the first plants to return were lupines, most of which are perennial plants that add nitrogen to the soil.
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Ecosystem Succession: Cycles of Nature - 0 views
Secondary Succession - 0 views
Primary Vs. Secondary Succession | eHow.com - 0 views
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Ecological succession refers to the process by which ecosystems change over time. Primary succession and secondary succession are the two different types of ecological succession
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Primary and Secondary Succession are both slow processes that describe change in an ecosystem. One community of organisms are gradually replaced by other organisms as conditions change. Primary Succession starts with rock while Secondary Succession starts in a place that already had an ecosystem that was destroyed. Soil already exists in Secondary Succession.
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Print this article DartUtils.loadGoogle160 = function() { dmjs.runInlineAd = true; $('.AdUnit160').hide(); $('.AdWrapper').addClass('no160'); }; dartAds.renderiFrameAd([{ sz: '160x600' }], 160); Meaning Primary succession is the process by which an area first changes from bare rock into a functioning ecosystem. Secondary succession is the process by which an ecosystem that has been destroyed gradually regains its former appearance and function.
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Secondary succession can occur in the same area any number of times. Because it is defined as the first time ecological succession occurs, primary succession can only happen once to any given area.
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Ecological Succession - YouTube - 3 views
Taiga Biomes - 3 views
Cells From Other Cells Song - YouTube - 1 views
Biology4Kids.com: Cell Structure - 1 views
Build-A-Prairie - 2 views
Marine Biome - 0 views
KDE Santa Barbara - 0 views
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