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| the insects most often kill cacti with an |
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Definition
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| the males that had the greatest reproductive success were the birds with tails that were |
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| the movement of alleles form one population to another is called |
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Definition
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| what does being in hardy-weinberg equilbrium mean for a population? |
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Definition
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Term
| which of the five factors that can lead to evolution would operate on a change in body color that enabled animals to better hide form predators |
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Definition
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Term
| reproductive isolation occurs when |
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Definition
| members of different populations can no longer mate successfully |
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Term
| coevolution is a process in which species |
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Definition
| evolve in response to changes in each other |
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Term
| two species that are closely related become increasingly different through |
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Definition
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| what is a trerm for feature that allows an organism to survive better in its enviorment |
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Definition
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Term
| all the individuals of a species that live in a particular area are called a |
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Definition
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Term
| the remnant of anorgan that had a fuction in an early ancestor is known as an |
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Definition
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Term
| fossil evidence shows that structures considered vestigal in livng organisms |
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Definition
| were useful to their ancestors |
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Term
| the combined alleles of all the individuals in a population is called the |
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Definition
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| a group of organisms of the sme species that live in the same area is called an |
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Definition
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Term
| herbivores are which of the following |
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| which phrase best describes biodiversity |
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Definition
| # of species in an ecosystem |
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| an ecologist counts weeds to monitor their population. which of the following best describes the ecologist methods |
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Definition
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| organism that feed on dead or decaying matter are called |
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Definition
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| what do all the biotic and abotoic factors in a given area mkae up |
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Definition
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Term
| which process is part of the hydrologic cycle |
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Definition
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| which model shows the nbumber of organisms at each trophic level in an ecosystem |
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Definition
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| which materials recycling would reduce the largest portion of america trash |
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Definition
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Term
| in what biome is biodiversity the highest |
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Definition
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Definition
| as a previsoly exsisting community is replaced |
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Term
| when the settelers arrived in new england many forests wre turned into feilds eventually some fields were abandoned and then grew back intgo forests this is best described as |
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Definition
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| which of the following provide most energy in ecosystems |
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Definition
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Term
| almost all autotrophs get their energy from |
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Definition
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Term
| which of these is an example of parasitism |
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Definition
| a leach feeding on the blood on a host |
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Term
| whic of the following is a density -dependent limiting factor |
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Definition
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Term
| which of the following is a density -dependent limiting factor |
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Definition
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Term
| pioneer species are the first |
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Definition
| organism to live previosly unhabbited a real |
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Term
| the reestablishment of a damaged ecosysytem in an area where the soil is intact is called |
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Definition
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Term
| the layer of air surrounding earth is known as the |
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Definition
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Term
| what are renewable resources |
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Definition
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Term
| by how much did the world population increase between 1950 and the last actual recorded population |
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Definition
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Term
| which of t he following is common to the carbon cycle the nitrogen cycle and the water cycle |
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Definition
| the substance is required by living things |
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Term
| as a population reaches its carrying capacity resources become more scarce. which of the following would increase within the population |
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Definition
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Term
| a trait that allows organsims to survive and reproduce betterthan others without the trait in a specific enviorment |
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Definition
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Term
| according to darwin evolution occurs |
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Definition
| because of natural selection |
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Term
| which of the follownig describes fossils |
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Definition
| traces of organisms that lived in the pass |
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