Garbage pollution has a big effect on the environment. The garbage can harbor rats and fleas that carry harmful diseases.It can cause pollution and the whole city or the environment will be unhygienic if the domestic waste is not properly decomposed.
Biodegradable wastes are decomposed by the micro-organisms. By this process, mineral elements like C, N, O, P etc. are cycled back into the biosphere.
Biodegradable substances such as human wastes can pollute sources of water and cause diseases like Cholera, Diarrhoea and Dysentery. Heaps of biodegradable wastes become breeding sites of houseflies, mosquitoes and rats which are causes of many diseases.