B. lakes is a part of the biosphere
Biosphere is defined as "<span>the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms." and a lake is the only thing on the list that could be occupied by a living thing.</span>
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<span>Work: W = Fd. 50(distance) multiplied by 90(force) would equal 4500 J or, answer D</span>