Exam 20: Preserving Biodiversity

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In the Investigating Life,"Up,Up,and Away," researchers showed that the population of alpine chipmunks

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What resulted in the biodiversity on Earth?

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There are ________ parts per million of carbon dioxide in the Earth's atmosphere.

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Humans can survive on Earth without biodiversity.

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Why is it important to maintain biodiversity?

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To be considered ________,an introduced species must begin breeding in its new location and spread widely from its point of introduction causing destruction.

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Overexploitation is harvesting a species faster than it can reproduce.

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In many wetlands, nonnative purple loosestrife has become the dominant plant species, often accounting for 90% of the total plant mass. The populations of cattails, canvasback ducks, and bog turtles have decreased in areas with purple loosestrife. -Canvasback ducks and bog turtles are likely impacted by purple loosestrife by

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Since the 1950s,only 1% of the ocean's large predatory fish have disappeared.

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The current extinction rate of vertebrates is some ________ times the historical background.This is primarily due to habitat destruction.

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