Is a characteristic of drug addiction in which larger and larger amounts of the drug are needed to acheive the desired sensation.

What best describes lactic acid fermentation?

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

Which member of the following food chain will be least affected by ddt, a pesticide water pollutant, if bio-magnification is occurring? algae> zooplankton> crayfish> leopard frog> large mouth bass