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10 Cards in this Set
- Front
- Back
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Historical geology
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one of the three major branches of geology (the other two are physical and environmental)
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extirpation
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a species has died out in a local area, but it continues to exist elsewhere
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ecological extinction
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where a species is so rare that it essentially has no role or impact on its ecosystem
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Background extinctions
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those that occur because of natural causes, such as changes in habitat, climate, predation, evolution, or because of localized catastrophes such as volcanic eruptions, or floods, or fires or drought
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mass extinctions
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There have been at least 5 majormass extinctionsthat have killed off up to 95% of all living creatures on Earth in a short time period (like the dinosaurs)
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How many species become extinct every day?
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Around 50 species per day
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Habitat fragmentation is especially disruptive for two major reasons
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Island effect
Edge effect |
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Citrus greening
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a bacterial plant disease that destroys citrus (orange, lime, lemon) trees
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Asian citrus psyllid
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a tiny insect no bigger than a gnat that feed on citrus leaves and stems
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TEST
Which is true about zebra mussels |
ALL OF THE ABOVE
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