Biology

Biology, 30.06.2019 21:00, val6298

How many percents are humans made from water ?

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Biology, 12.07.2019 00:00, ysbchrishoncho

Pure water has a ph of 7. the inside of a cell is also about ph 7. this might be so because buffers work best when the ph is close to 7. humans are largely made up of water by weight. most of the chemical reactions that occur in humans can proceed optimally at ph 7. ionic bonds cannot form at ph 7.

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Chemistry, 22.07.2019 16:30, haileysolis5

Almost 99% of earths atmosphere is made up of two gases. what are the two gases and the percents of each? a) 21% oxygen and 78% nitrogen b) 21% water vapor and 78% oxygen c) 21% nitrogen and 78% oxygen d) 21% carbon dioxide and 78% oxygen pls

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Geography, 21.08.2019 08:30, bobk1433

Which of the following describes a reason why it is important for humans to protect and maintain water resources? (choose all that are correct) a. humans use water to raise livestock to use for food and other products. b. humans use some water resources for power generation. c. all humans depend on water for maintenance of their internal homeostasis. d. humans use water to grow crops to use for food and other products.

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