Well if you mean what does the controlled part of a scientific investigation, it is the part of the investigation that will be your control or your base, untouched, original, data and such.
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these places offer a somewhere to live;
provide economic opportunities; and
can be rich in natural resources.
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Explanation:
Originally Answered: What will happen when Earth uses up all of its fossil fuels? Food production will start to shrink due to less carbon dioxide in the atmosphere. Primary energy production will be nuclear, producing electricity.
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A.) In dark, warm, moist areas
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I cant give much of an explanation for this question, but I hope I helped! :)