Which is the best description of the cause of sound waves? a. a decrease in pressure
b. one object bumping into another
c. molecules becoming electrically charged
d. a vibration in material causing a vibration in an adjacent area

Which part of cellular respiration must occur before any of the other steps can occur

Which of the following is a good strategy when it comes to desserts

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