what is light? Why is it important for us?
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Light is the plants' only source of energy, so they are entirely dependent on light. Unlike people and animals who derive energy from carbohydrates, protein and fat, plants produce these substances using the energy from light and from carbon dioxide in the air.
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Light is a form of energy. It gives us heat and light. It is important for us because by light we see all the things around us.
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