Answer:
Mixtures
Explanation:
Mixtures are simply a physical combination of two or more substances. They can be separated based only by physical means, or by undergoing physical changes. A physical change alters a substance without changing its composition.
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The answer would be choice B because the energy decreased by 20 J
It Emeterio near the North Pole of the worlddddddd
1: it is +2
2: it is +6
(Make this brainliest answer please)