Answer:
D
Explanation:
More than 50 percent of the general population is vitamin D deficient, regardless of age.
Answer:
The upper respiratory system includes the nasal cavity (nose), the pharynx and larynx.
Explanation:
Air enters the body through the nose or mouth, this moistens and warms the air that enters since cold dry air will irritate the lungs. The air then travels down the voice box and down the windpipe.
B. 24/8 hours ...........................................................
Answer:
I would say about 2 weeks because they say people had the most protection 2 weeks after getting vaccinated.
Explanation:
