Detergents often contain
Detergents are the chemicals that have an efficient cleaning ability due to the surfactants present in them. In order to provide the whitening effect, detergent contains bleach. Their are optical brightening substances called fluorescers also present. The perborates are added in the detergents as they provide effective oxidizing property. However, all these chemical are nondegradable in natue and tend to persist in the environment. Hence, the correct answer is ‘All of the above’.