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Biology, 21.06.2019 20:00
Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area
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Biology, 21.06.2019 21:00
In natural selection, what is actually โselected? โ a) alleles are directly selected b) genotypes are directly selected c) phenotypes are directly selected d) entire populations are directly selected
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Biology, 22.06.2019 02:00
The leopard frog and the pickerel frog are two closely related species. in areas where their ranges overlap, the frogs will remain separate species if they
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Biology, 22.06.2019 02:30
Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?
Answers: 1
Why does iron fertilization of open oceans increase phytoplankton densities?...
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