Which of the following is the main benefit of ozone? a. reduces pollution levels b. absorbs ultraviolet radiation from the sun c. filters particulates from the atmosphere d. neutralizes the effects of carbon monoxide select the best answer from the choices provided. a b c d

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.

Select the correct answer from each drop-down menu proteins are

How have high taxes on tobacco products impacted the number of people who use them? a. the number of tobacco users has increased. b. the number of tobacco users has decreased. c. the number of tobacco users has not changed. d. the number of adolescent tobacco users decreased, while the number of adult users increased