During the cardiac cycle, the bicuspid valve closes: a. while the ventricle is in diastole b. when the ventricle is in systole c. while the atrium is contracting

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.

the answer is c. it will give up it's valence electron to the other atom.