Answer: I would say that things like making all factories run on elctricity and not smoke and let it come from the top.
Explanation:This will help because it will reduce smoke/co2 in the air. PS don't put this I'm not completely sure u will get it. Put something like my idea, research what makes the most co2 and say to make it electric
Answer:
36% of calories come from proteins
Explanation:
stability that comes from the trunk and the spine
