Organic molecules, which are found mostly in food. These molecules have C-C or C-H bonds, which are high energy bonds.
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Ecosystem engineers are species that modify their environment in a significant manner, creating new habitats or modifying existing ones to suit their needs.
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I think it is Ants but I am not sure..
If all nations agreed to reduce global warming then It would be good because the seals need icy conditions. So the less global warming then the more icy habitats there will be and the seals will have more places to live.
Hope this helps
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Reviewing other studies is what you should do.