Marijuana is the drug approved for medical purposes in a limited capacity.
Our environment plays a big role in our health. If we do not asses our environment, our risk of sickness an disease increases. Any kind of chemical or radiological substances in the air, are exposures that can affect our health. Meaning, the air we breathe, foods that we eat, water we drink from, and products that we use can sicken us if they aren't properly cleaned or pure.
The answer is C 13 hope this helps
The hemoglobin carries oxygen from the lungs to other parts of the body and carries carbon dioxide back to the lungs.
Hope this helps
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Do you have answer choices, or is this an open-ended one?