What is the atmospheric pressure? a. 4.7 pounds per square inch
b. 13.2 pounds per square inch
c. 1.7 pounds per square inch
d. 14.7 pounds per square inch

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

Which of the following is not a benefit of genetically modified foods? a.pest-resistant crops b.herbicide-resistant crops c.plants that do not require water?

When the body has a weakened immune system, the production of antibodies is increased.