- Life Sciences
small protrusions on the surface of mammalian teeth (premolars and molars), which help to grind up food.
elongated cells in the xylem of vascular plants that transport water and mineral salts.
a drug that inhibits (slows down) the action of the nervous system.
(also called heterotrophic organisms) organisms that are not able to produce their own organic...
variation due to the small differences in the genes that control each feature and characteristic...