List two problems that arise due to the use of detergents instead of soaps.
Two problems arise because of the use of detergents instead of soap:-
i. Soaps are biodegradable, while detergents are non-biodegradable; hence, detergents accumulate in the environment and cause problems.
ii. Certain phosphate additives are added to detergents. These phosphate additives act as nutrients for algae which form a thick green scum over the river water and upset the animal life in the river.