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Biology, 21.06.2019 15:00
According to the theory of punctuated equilibrium, at what rate does speciation occur? species change depending on the rate of natural selection. after periods of stasis, new species evolve relatively rapidly. species change slowly and eventually form new species. some species change quickly and others change slowly to balance the overall rate.
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Biology, 22.06.2019 01:40
Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat
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Biology, 22.06.2019 05:30
What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?
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Biology, 22.06.2019 12:30
Describe the relationship between isotonic solutions, equilibrium, and water movement into and out of a cell.
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History, 15.10.2019 23:00
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Mathematics, 15.10.2019 23:00
History, 15.10.2019 23:00
English, 15.10.2019 23:00
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Mathematics, 15.10.2019 23:00