Genetic drift leads to evolutionary change in the absence of natural selection. explain how this is possible.

Could someone me with number one you

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

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