D= mass/volume so it's 100/68 which equals 1.47cm3
All of them are a source of getting energy but solar and wind energy are a more beneficial way of producing the energy we need.
Answer:
C is the answer hoped I helped you have a awesome day by
Answer:
the second layer of the atmosphere.
Most of the mass of an atom is located in the (nucleus), and most of the volume is taken up by the (electron clouds).
The ones in the parenthesis are your answers.
Hope this helps!