I would say A. Because c and d r very dangerous if u think about it. And b is right in some situations. But if u do a then people can see whts going on if something happened because of the light. and it is safe. If wrong let me know. :D
Answer:
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Explanation:
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The unit of energy for nutrients that are broken down is calories
Hope this helped
In the first class lever the fulcrum is located between the effort and the resistance.In second class lever The second class of lever has the fulcrum at one end, the effort applied at the other end, and the resistance somewhere between those points. [ The third class of levers has the fulcrum at one end of the lever, and the weight or resistance to be overcome is at the other end, with the effort applied at some point between. ]
