When you are faced with a dangerous or threatening situation, your adrenal glands release stress hormones such as adrenaline into the bloodstream. Subsequently, there are increases in your blood pressure, heart rate, respiration, and perspiration. This reaction is known as the

What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water