I don't have the story please put it in the comments so I can read it :)
Answer:
Carbon dioxide is a greenhouse gas and traps heat in the atmosphere. Without it and other greenhouse gases, Earth would be a frozen world. But humans have burned so much fuel that there is about 30% more carbon dioxide in the air today than there was about 150 years ago, and Earth is becoming a warmer place.
Answer:
DNA is the recipe for how to build your body's proteins and mRNA is an index card it copies the DNA but doesn't have to stay in the nucleus. (1st option)
Explanation:
DNA carries genetic instructions for developing, growing and reproducing all known organisms and many viruses. mRNA, on the other hand, collects the DNA's instruction to the cells' protein-making part.
