According to the World Health Organization, one in every _____ persons lives in urban areas with air that is unhealthy to breathe.
a. two
b. six
c. ten
d. twenty
e. fifty
Answer: B
According to the World Health Organization, one in every _____ persons lives in urban areas with air that is unhealthy to breathe.
a. two
b. six
c. ten
d. twenty
e. fifty
Answer: B
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.