Which items most likely contribute to heart disease? ozone and particulate matter

nitrogen oxides and carbon monoxide

ozone and nitrogen oxides

carbon monoxide and sulfur dioxide

Which question should you ask to evaluate the credibility of health information? a.) does the article contain illustrations? b.) is the information up to date? c.) is the information available online? d.) is the information written in the united states?

What angle should your knees not bend past when squatting? a. 30 degrees b. 45 degrees c. 90 degrees d. 120 degrees

There are blank calories in a gram of carbohydrate