Answer:
The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart.
Explanation:
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I don’t know the answer,, sorry
The number of cases of a disease in a specific population at a particular timepoint or over a specified period.
(I believe this is the answer!)
