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Utk Bio 260 Exam 2 Questions And Verified Answers

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UTK BIO 260 EXAM 2 QUESTIONS AND VERIFIED ANSWERS

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perennial organisms


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grow and reproduce over many seasons before death




stabilizing selection


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, form of natural selection by which the center of the curve
remains in its current position; occurs when individuals near
the center of a distribution curve have higher fitness than
individuals at either end




predation


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the preying of one animal on others.




bergmann's rule


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the principle that an animal's size is heat-related; smaller bodies are
adapted to hot environments, and larger bodies are adapted to cold
environments.




dependent variable


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the outcome factor; the variable that may change in response to
manipulations of the independent variable. (y-axis)

,gamma diversity


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regional diversity




why do high pressure systems form


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when the air mass above the Earth is denser than the surrounding areas; as
warm humid air spirals upwards it cools and clouds form




equilibrium theory of island biogeography


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a theory stating that the number of species on an island reflects a balance
between the colonization of new species and the extinction of existing
species




null hypothesis


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, a statement or idea that can be falsified, or proved wrong




can an individual evolve


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no, but a population can




how does solar radiation affect global atmospheric circulation/wind patterns/ocean
currents


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where the sun rays are steeper it heats earths surface and then emits
infrared radiation to heat the air above it; warm air is less dense so it rises,
atmospheric pressure decreases with increasing altitude; wind flow moves
from. high to low pressure and causes wind patterns (Coriollis effects);
warm water on the top causes upwelling




carrying capacity


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the largest population that an environment can support at any given time




net reaction of photosynthesis

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