B because you can get cancer badly by smoking people smoke cause of stress the stress makes it worse to smoke
The cell membrane consists of three classes of amphipathic lipids: phospholipids, glycolipids, and sterols. The amount of each depends upon the type of cell, but in the majority of cases phospholipids are the most abundant, often contributing for over 50% of all lipids in plasma membranes.
Answer:
I think it might be the last one
A naturally occurring sold inorganic substance with a definite chemical composition and a crystal structure is a mineral.
