Answer:
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Answer: Hot air is less dense than cool air; the heated air causes the balloon to rise simply because it is lighter than an equal volume of cold air. Buoyancy is an upward force that the air exerts, and it helps hot-air balloons and blimps stay in the air. A hot air balloon uses a burner to heat up the air inside the balloon.
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Answer:
The plant makes food with the water that is why it is lost when it goes to the leaves.
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Errors during duplication, errors during recombination, the movement of genetic elements, and dna damage
