What did the miller-urey experiment demonstrate? A. RNA was the genetic storage material before DNA
B. Eukaryotic cells evolved from prokaryotic cells following an endosymbiotic event
C. Life originated in outer space and was brought to Earth on a meteor
D. Complex molecules can be formed from water, carbon dioxide, methane, ammonia, and hydrogen gas in a reducing atmosphere

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

what bodys are there orbiting?

rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds

looks like the answer is     c     to me!