the answer to the equation is 4/5
Consisting of Lakes<span> Superior, Michigan, Huron (or Michigan–Huron), Erie, and Ontario, they form the </span>largest group of freshwater lakes<span> on </span>Earth<span>, containing 21% of the </span>world's<span> surface </span>fresh water<span> by volume.
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The greenhouse gases<span> absorb some of this energy and radiate much of it back towards the surface whilst the rest is radiated out to space. This plays an </span>important<span>role in keeping the </span>Earth's<span> surface warm and able to sustain </span>life<span>.</span>
