11. The heart is made of * O involuntary cardiac muscle
O voluntary muscle
O skeletal muscle

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

List five ways we are indebted to phytoplankton

20 the main source of energy for our planet comes from the