If a ship will be sailing through warm and cold water, people think about making it less dense than the warmest water as they load the ship with cargo. I think you forgot to give the options along with the question. I hope that this is the answer that has actually come to your desired help.
I think it’s C b/c it works for me
The answer is 8.
Hope I helped.
Answer:
artificial: light bulb, flash light, computer screens. natural: sun, stars, fires.
