Red hair, blue eyes, and height are all examples of...

Examples of polygenic traits

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.

2%? i tried finding the exact sorry if it's not 100% correct ; -;