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26 March, 04:06

What is the primary source of energy in a food chain

1. oxygen

2. sun

3. Carbon dioxide

4. water

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Answers (2)
  1. 26 March, 04:23
    0
    Sun. Plants obtain the suns energy to create their own food to grow. Soon those plants (vegetables aswell) are brought to markets where humans can purchase to eat.
  2. 26 March, 04:27
    0
    I'd say it's the Sun.
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