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19 Cards in this Set
- Front
- Back
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What are the effects of Global warming?
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1) Sea level is rising
2) Permafrost is becoming liquid as a result of warming. 3) Greenland is melting as in Antarctica. 4) Mountain glaciers are disappearing. 5) Evaporation, storm intensity and rainfall are increasing. 6) coastal glaciers are retreating |
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What feed on dead leaves and dead animals?
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Detritivores
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CO2 and CH4 in the atmosphere trap solar radiation T or F
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True
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Facing global warming we have three options, what are the options?
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mitigation, adaptation, suffering
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----- temp increase during the 20th century, responsible for about ----- rise
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0.7 degree Celsius, 7cm
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How is Carbonic acid form?
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About 1/2 of Antropogenic CO2 as dissolved in the ocean 30% more acidic since 1750. A threat of marine life.
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why are islands so vulnerable?
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Island evolve in the absence of predators
Humans introduced competitors, diseases Island population are usually small which increase their risk for extinction. |
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Exponential Population Growth?
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Nt=Noe^rt
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Logistic Population Growth
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dn/dt=rN(1-N/k)
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Pop growth models treat all individuals as the same in their effect on population growth, but this is unrealistic. True or False
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True
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what is endemic species?
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species found naturally in only one geographic area and no place else
Occupy restricted ranges |
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Hotspots
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areas where species have high endemism (species found in only one area and no place else) and are disappearing at a rapid rate.
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synonymous mutations
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accrue more faster than non-synonymous
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Animals evolved ----- to human predation
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counter adaptations
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what is one of the most pervasive enemies of biodiversity conservation efforts.
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Habitat Fragmentation
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Causes of extinction
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Overexploitation
Habitat loss Introduced species Disruption of ecosystem interactions Pollution Loss of genetic variation Catastrophic disturbances Often unknown causes |
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Example of bottom-up effects
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Farmers increase fertilize soil for larger crops that can feed more cattle
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what is succession?
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Temporal changes in species composition associated with colonizing an empty habitat
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what is the brain size of homo neanderthals?
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1600cc
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