Both the heart and arteries contract to pump blood throughout the body. true or false? true both the heart and arteries contract to pump blood throughout the body. the heart contracts to move the blood flow through your arteries to the rest of the body

poor water quality affects most estuarine organisms, including commercially important fish and shellfish. the pollutants that have the greatest impact on the health of estuaries include toxic substances like chemicals and heavy metals, nutrient pollution (or eutrophication), and pathogens such as bacteria or viruses.

and after water is usually warmed by the sun the water temperature raises and then evaporates .