What does diploid mean? what types of cells are diploid? what is the diploid number for humans?

Diploid means the cell has the total number of chromosomes. In a human, this would be 46. A normal body cell is diploid, compared to a haploid cell which is only in sex cells, like the sperm or the egg.

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.