Clean air is of concern to most americans. the environmental protection agency (epa) has set forth guidelines for business, industry, and private citizens to follow to improve air quality. all but one is a guideline of the epa to improve air quality. that is

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer