Answer:
the sun
Explanation:
All the energy in oil, gas, and coal originally came from the sun, captured through photosynthesis. In the same way that we burn wood to release energy that trees capture from the sun, we burn fossil fuels to release the energy that ancient plants captured from the sun.
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Answer: Earth spins on its axis
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Ecosystems need producers because they are the start of the food chain.
Producers are consumed by first consumers, the second consumers and so on.
Coexist... They don't harm us... And they even protect us from other organisms outside our body
And in our guts they make vitamins :)
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