Lipase is a protein that helps the body break down fats in foods. Lipase is best classified as which type of protein? an enzyme an antibody a structural protein a binding protein. Its for edg please answer quickly if you can

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.