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Serggg [28]
3 years ago
11

The lungs, nose, and trachea are organs of the respiratory system. Which best describes these organs? A) They deliver nutrients

to the other tissues. B) They deliver oxygen to the blood. C) They are both used for support. D) They help break down food.
Biology
2 answers:
Bezzdna [24]3 years ago
10 0
B) They deliver oxygen to the blood... Hope it helps :)
Romashka-Z-Leto [24]3 years ago
5 0
B.) they deliver oxygen to the blood
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Complete Question

There were 100 new cases of syphilis last year in a given population of 100,000 people. At that time, 500 people in this population already had syphilis. The incidence of syphilis in this population is __________.

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