A group of organisms that can reproduce to produce fertile offspring (babies that can reproduce). A)Biosphere
B)Community
C)Population
D)Ecosystem

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