Compare your body’s physical and chemical barriers that protect you from infections.
1 answer:
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The following work out "curl ups". This would most likely be when you would have to be laid down, and when you would have to "curl" you back up. And by doing this kind of workout, this would give you muscular endurance in your body, and not only that, but this would also give you (a lot) of strength. So based by looking at your options, your correct answer would most likely be (D) Both A and B.
