In an controlled experiment, why is it important to change just one variable at a time
p. s it a science question but they didn't have a science button

Complete the following statements about the functions of the digestive system.carbohydrates and fats are digested in secretes enzymes that aid in the digestion of carbohydrates, fats, and proteins.the secretes bile; bile is stored in undigested food is processed into feces in feces is then stored in until it is eliminated from the body via

Number and variety of living organism; includes genetic, species, and ecological types

Which of these definitions have been paired with the correct type of cell?