Answer:
Using a control group means that any change in the dependent variable can be attributed to the independent variable.
Explanation:
Valence electrons, then, are electrons in the outermost shell of the atom that determine an atom's or group's ability to bond with others. In chemistry, a group refers to two or more atoms that are specifically arranged.
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New Orleans, Louisiana.
If you look at a map and insert these coordinates, New Orleans is the city located at 30n 89w.
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The answer for your question is letter A
