A plant cell wilts when it is hot and dry. Why?

In my own words it wilts due to the heat and lack of moisture after a certain time of being unwater the wilting state begins

soon enough if not given water it will die from dehydration

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.