What is the difference in types of chemical bonds between a saturated fat in a unsaturated fat and poly unsaturated fat

Which best describes carbon dioxide’s path out of the body

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.

Which process involves glucose reacting with oxygen to produce energy, carbon dioxide, and water? a. photosynthesis b. atp production c. glycolysis d. cellular respiration