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Biology, 26.12.2021 19:10 angelyce4142
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How are the waste products of respiration removed?
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A) Food waste moves from the digestive system to the cardiovascular system.
B) Carbon dioxide is removed by respiratory organs.
C) The cardiovascular system transports waste products from cells to other systems.
D) Oxygen molecules are removed by the cardiovascular system.
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Why are scientists concerned about the depletion of the ozone levels in the stratosphere?
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Which chemical reaction shows photosynthesis? a. water + carbon dioxide + sunlight → oxygen + glucose b. carbon + oxygen → carbon dioxide c. hydrogen + oxygen → water d. nitrogen + hydrogen → ammonia
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Scientists discovered fossils in several layers of the earth you see here. they found fossils of algae, snails, and clams in layer d. given that information, where do you think they found fossil evidence of simple land plants and amphibians? a. a b. e c. f d. g
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How are the waste products of respiration removed?
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