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As lettuce's molecular structure is mainly made up of water (H2O), humans are unable to obtain energy, nor vitamins and nutrients from that source of food.

As well as being made up of mainly water, lettuce, is a plant of cellulase. Therefore, humans need a more adequate source of food to help the body maintain its energy levels

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13y ago

As lettuce's molecular structure is mainly made up of water (H2O), humans are unable to obtain energy, nor vitamins and nutrients from that source of food.

As well as being made up of mainly water, lettuce, is a plant of cellulase. Therefore, humans need a more adequate source of food to help the body maintain its energy levels.

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Q: Explain why humans obtain limiting energy from eating lettuce?
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