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Why do plants need photosynthesis and cellular respiration?

Answer 1

Sebastian Alvarez

The light energy is stored in chemical energy, while this energy is utilised in respiration.

During the photosynthesis, a green plant consumes water, carbon dioxide, and light energy, and produces glucose and oxygen. The light energy is stored in chemical energy.
The glucose is important for the respirstion. It is necessary for cellular respiration and energy is released.

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Answer 2

Hudson Ansley

Using light, water, and carbon dioxide, photosynthesis is the process by which plants make glucose, their primary energy source. Cellular respiration enables plants to transform glucose into ATP, which powers cellular functions and growth.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.