The contains the genetic material within a cell.

The nucleus contains the genetic material within a cell, because it's the main part of the cell that carries most information :3

Explanation:

:3

the nucleus contains the genetic material within a cell

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.

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