Primary succession occurs when pioneer species move into an area that has no plants. Which organisms are common pioneer species?

Which part of the cell is affected by the movement of molecules through diffusion, osmosis and active transport?

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

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.