kalp

Iva, a 19-year-old female, goes to her gynecologist for the last round of her human papilloma virus (HPV) vaccine.

1. How does this vaccine prevent IVA from contracting HPV?

2. What type of immunity is being described? 3. Why are boosters for vaccines

How human papilloma virus (HPV) vaccines work to prevent infection with HPV.   

How can carbon dioxide be considered a pollutant when it is a natural component of air?

a. Carbon dioxide is considered a pollutant even though it is a natural component of air, because it is harmful to all living organisms.

b. Carbon dioxide is considered a pollutant when larger concentrations than normal are present in the air as a result of human activity.

c. Carbon dioxide is considered a pollutant, because it forms harmful chemicals when mixed with other pollutants in the air.

d. Carbon dioxide cannot be considered a pollutant under any circumstances.