1.Ecosystems require energy to function. Where does this energy go as it is used? How does the flow of energy conform to the laws of thermodynamics?
2. IN what forms is carbon stored in oceans, the atmosphere, living things, and rocks?
3.
What is an isotope? Watch this for help:https://www.youtube.com/watch?v=wMx1l86XFLU
Give me an example of an isotope. How do scientists use isotopes?
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