22. We know that tobacco is harmful to the circulatory system because it
1. Is linked to heart disease.
2. Destroys red blood cells.
3. Decreases heart rate.
4. Strengthens the respiratory system.
22 Whatiana

Answers

Answer 1

Answer:

Um...

Explanation:

Answer 2

Answer:

1. Is linked to heart disease

Explanation:

We automatically rule out numbers 3 and 4 because smoking tobacco actually INCREASES heart rate and weakens the respiratory system. Also, we are talking about the circulatory system, so we automatically know it has something to do with the heart. There is definitely a link to heart disease and this is a lot more devastating than red blood cells. So I'd go with 1, unless your teacher taught you otherwise.


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Answers

Answer:

The four core elements of exercise are aerobic exercise, strength training, developing core muscles and interval training. Aerobic exercise is all about getting your heart pumping. As you perform aerobic exercises, like walking, running or using an elliptical, your immune system is activated and your stamina increases.

Explanation:

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