Chemistry, 03.09.2020 06:01 memester74
(25 POINTS IF ANSWER ALL QUESTIONS) Sarah observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the cliff. She marked the cliff at five positions: 5, 10, 15, 20 and 25 meters from the top. She dug out and removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. What is the hypothesis? What would be the control group? (hint: not in paragraph) What is the experimental group? What was deliberately changed? What responded to the change?
Answers: 2
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What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?
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Water's surface tension and heat storage capacity are accounted for by its a) orbitals b) weight c) hydrogen bonds d) mass e) size
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Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.
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(25 POINTS IF ANSWER ALL QUESTIONS) Sarah observed that different kinds and amounts of fossils were...
Mathematics, 06.05.2020 05:38