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I think it is that they hibernate?
Answer:
A sharks ecosystem should have a far and wide open waters and also should have salt water and no ordinary water. it should be around lots of fish so it has stuff to eat. last it needs to have other sharks to mate or keep the chain going.
Explanation:
Answer:
You can measure mineral hardness with The Mohs' Scale.
Hope this helped :)
<span><span>Lipids are the class of organic compounds that stores energy as fat</span>.
The answer is Lipids.
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