Climatic regions are classified according to temperature and

Diagram of the evolution of land plants?

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?

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