What does nonrenewable resources mean? a. the resource can be grown again or reproduced b. the resource can be renewed by replacing it with another resource c. the resource can not be renewed for millions of years

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