D. The average 8 to 18-year-old spends <em><u>3 hours or more</u></em> per day on average in front of a screen doing very little to no physical activity.
so first carbon dioxide is actually good for the enviroment bc it helps keep heat in from the sun for earth also like car driving is bad bc is releases bad films into the air which harms the enviroment
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i hope this helps and have a good day with smiles :D