DAV school class 7 science ch 1question answer. fair chapter name nutrition in living organisms-plant..
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in the absence of photosynthesis the plant will not be able to make food. all human beings depend on plants for food.and if food is not made by the plants the humans will not be able to consume the food and stay alive. this is the reason why if photosynthesis is absent human life will not be present on this earth.
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