Question

question 7
the world health organization estimates that approximately _____ people (mostly in developing nations) die from unhealthy indoor air conditions every year, often from unvented heating and cooking sources.
10,000
500,000
4 million
1.3 million
question 8
atmospheric (air) pollutants impact the respiratory system (lungs, bronchi) of animals more than other systems in the body.
true
false

Explanation:

For Question 7: According to the World Health Organization, approximately 4 million people (mostly in developing nations) die from unhealthy indoor air conditions every year, often from unvented heating and cooking sources.
For Question 8: Atmospheric (air) pollutants enter the body mainly through inhalation. The respiratory system (lungs, bronchi) is the first - line of contact with these pollutants. So, they impact the respiratory system more than other systems in the body.

Answer:

Question 7: 4 million
Question 8: True