Under the superfund act,
a. toxic waste can enter the water system without concern.
b. most of the dangerous toxic dump sites in the u. s. have been cleaned up.
c. the epa may sue companies that dump hazardous waste illegally.
d. companies that cannot afford to clean up their hazardous wastes can have the government pay for the clean-up.

Which of the following is the best definition of aerobic respiration? o a. the cellular process that releases energy by breaking down glucose o b. physical activity that involves the repeated motion of large muscle groups o c. physical activity that increases heart rate and breathing rate o d. the cellular process that converts solar energy to chemical energy

To maintain asepsis when administering an injection, all parts of the syringe can be handled except the:

Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.