I would say that the most correct statement is the following one:
Certain types of renewable energy can be used for as many applications as certain types of nonrenewable resources.
Let's take for example the energy from solar panels (the renewable energy source) and the energy from burning fossil fuels: this energy can be used in the same situations!
18% of 400 is 72
Hope it helped
I think the best answer from the choices would be the first option. Icebergs float in the ocean since i<span>cebergs are composed of freshwater and freshwater is less dense then salt water. The ocean contains salts which contributes to its density which most likely would be higher with that of an iceberg.</span>