Answer: When the plant has enough water in its cells the guard cells swell up and open the stomata. When the plant isn't getting enough water the guard cells can't swell and the stomata stay closed, so the plant doen's lose water. But if the stomata are closed photosynthesis can't happen and eventually the plant might starve.
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Answer:
a. Proteins
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Chromosomes are made up of DNA tightly coiled many times around proteins
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electron
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elections circle the nucleus
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To carry out photosynthesis plants need four things: chloroplasts, light, water and carbon dioxide. Hope this helps!
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