Biology, 28.01.2020 21:56 trejo282961
One scientist discovered a new theory on the evolution of stars. why is it necessary for scientists all over the world to agree with the theory before it can be accepted?
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Biology, 22.06.2019 01:30
What are some characteristics of a free enterprise economy?
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Biology, 22.06.2019 02:00
Ais a group of individuals of the same that exist together in the same place at the same time
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Biology, 22.06.2019 05:40
Identify characteristics of energy from the sun. check all that apply. almost all of the energy on earth comes from the sun. energy from the sun is known as mechanical energy. the energy in fossil fuels originally came from the sun. plants convert the energy of sunlight into chemical energy.
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Biology, 22.06.2019 09:30
Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.
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One scientist discovered a new theory on the evolution of stars. why is it necessary for scientists...
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