A is the correct answer
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Answer:
Blood carries carbon dioxide back to our heart and lungs, oxygen back to heart and out to the body
Explanation:
Sneezing is the method some viruses spread (normally flu ones). When you are infected, and you sneeze, the viruses a dispersed in the air and the person that breathes he infected air might get infected.
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All DNA of creatures is made from the same materials, and is largely the same. (Humans are less than 5% different than primates genetically)
