C. Radiation is the answer.
As it can happen in vacuum also
Answer is
3) how much mass per unit of volume is in a substance
Answer: The Answer Would be D. surveys that ask people their opinions of beaches
Explanation: the reason is because asking people about their opinions are irrelevant.
Hope it helps :D
Answer: dissolves
Explanation:
When you stir a spoonful of sugar into a glass of water, you are forming a solution. This type of liquid solution is composed of a solid solute, which is the sugar, and a liquid solvent, which is the water. As the sugar molecules spread evenly throughout the water, the sugar dissolves.