a serious environmental hazard, acid mine drainage is the result of chemical weathering of pyrite that yields and that will degrade aquatic habitats.

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

Match each medication with its description.

Which example best describes a reflex action? a. eating food when hungry b. coughing when the throat is irritated c. bending down to lift a heavy object d. going for a walk outside