Rita has oily skin. which secretion that acts as a waterproofing agent for the skin and hair follicles does she produce in excess?
a. sebum b. sweat c. cerumen d. collagen

What is the best way to use the clean water act to address the issue of dirty water and diseases that plague asmall community? a) to report the number of cases of people who havecholera symptomsb) to provide health guidelines about effects from waterborne diseases c) to enforce standards that focus on chemical dischargeinto bodies of waterd) to carry out research that investigates how dirty wateraffects human health