What type of mutation is polyploidy?

Polyploidy describes the case of a cell or an individual possessing entire extra sets of chromosomes. The type of polyploidy is designated by the number of haploid (N) sets that are present. Triploid (3N) individuals have three sets of chromosomes while tetraploid (4N) individuals have four.

Explanation:

i have to report this, it doesn't relate to biology

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.