Each human body cells has how many pairs of chromosomes?

Look at the photo of the leaf. which term best describes this leaf?

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

Wich level of organization includes all the other levels or organizations