It is B, smoke and air pollution can stress the lungs and cause things like Respiratory distress if not wearing a proper mask. That is why in places with massive amounts of air pollution many people will wear face masks.
the answer to your question is A
Answer:
D) is the answer please thanks
490 ml
Explanation:
2.34×10^24
N=n×Na
N=3.89×(6.02×10^23)
N=2.34×+0^24 atoms of Cu
A
i did it before and got it right
