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A hypothesis is a possible explanation for a set of observations or an answer to a scientific question. A hypothesis must be testable and measurable. This means that researchers must be able to carry out investi- gations and gather evidence that will either support or disprove the hypothesis.
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- Congress passed the Clean Water Act into law.
- The National Environmental Policy Act was passed, which led to the formation of the EPA.
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Hello! I can only help with the first part. Nuclear energy is energy released during nuclear fission or fusion.
None of the above. They all involve plate tectonics.