Dependence and Addiction are the
same thing?
a. True
b. False

7th grade question (easy) look at the diagram of the food web. the arrows mean eaten by. what would happen if the number of snakes went down? answer choices are in the image.

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%