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Biology, 16.09.2019 17:50, daijahamaker062816
What are the three main reason human geographers interested in ecosystems involving interaction of humans with the biosphere and abiotic spheres?
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Biology, 21.06.2019 18:00, shelbyo1123
The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community
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Biology, 21.06.2019 23:20, towelmearowel
What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences
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