Which of the following statements best characterizes the risk of ground-level ozone and air pollution? A. It contaminates the food supply.
B. It contaminates the water supply.
C. It is very harmful to human health.
D It disrupts the food chain in lakes.

Why do you think the soviet union opposed the marshall plan?

What is your cultural heritage? what nonverbal behaviors are typically associated with your cultural heritage? which of those behaviors do you display? how might studying other cultures you be a competent communicator?

Martha participates in a research study in order to receive extra credit for her psychology class. when she arrives in the research office she is given a can of what looks and tastes like beer, but which actually contains no alcohol. in the adjoining room martha's classmate karen is also participating in the study. karen receives a can of alcoholic beer. if the experiment was designed to test the effects of alcohol on concentration, then who is exposed to the independent variable?