Coronary artery disease is a disease of the heart where the arteries and blood vessels become clogged with fat deposits called? following answers: a. fat b. tartar c. plaque d. adipose tissue

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis