A population is a total of all the organisms of the same group, that live in a particular geographical area, and have the capability of interbreeding. The world population is estimated by the United States Census Bureau to be 7.312 billion. Overpopulation can occur from an increase in births, a decline in mortality rates, an hike in immigration, or an unsustainable biome and depletion of resources. The human population has been increasing day by day. Over population effects nature, Eco systems, and other natural resources very badly. Some of the problems occur because of over populations are:- Inadequate fresh water for drinking as well as sewage treatment and effluent discharge, Depletion of natural resources, especially like fossil fuels, Increased levels of air pollution, water pollution, soil contamination and noise pollution etc, Deforestation and loss of ecosystems etc. Here we are listing top 5 largest cities on earth by population.
It is the first largest city in Japan by population, and most populous municipality of Japan. It is the capital city of Kanagawa Prefecture. It is near on Tokyo Bay, south of Tokyo, in the Kantō region of the main island of Honshu and one of its major ports along with Kobe, Osaka, Nagoya, Hakata, Tokyo, and Chiba. Over all population around 37843000 in march 2016.
Jakarta is Indonesia’s huge capital and it sits on the northwest coast of the island of Java. It is a historic mix of cultures – Javanese, Malay, Chinese, Arab, Indian and European. The population of Jabodetabek was over 28.0 million according to the Indonesian Census 2010 and by January 2014 it was officially estimated to have increased to over 30.0 million.
Delhi is the capital city of India. It is bordered by Haryana on three sides and by Uttar Pradesh on east. It is the largest city in India in terms of geographical area and about 1,484 square kilometres (573 sq mi). It is the 3rd largest urban area in the world. according to various survey Delhi’s groundwater level is falling and its population density is increasing and Delhi became one of the fastest growing cities in the world. Over all population around 24998000 in March 2016.
Manila (Metro Manila)
Manila is the capital of the Philippines, is a densely populated bayside city on the island of Luzon and that mixes Spanish colonial architecture with modern skyscrapers. Metro Manilais the most populous region of the country which is composed of Manila, the capital city of the country. It is having the population of 24,123,000 and that making it the 3rd most populous urban area in the world.
Incheon officially known as the Incheon Metropolitan city located in northwestern South Korea, bordering Seoul and Gyeonggi to the east. Along with Seoul itself and Gyeonggi Province, forming the world’s second largest metropolitan area by population. Over all population around 23480000 in March 2016.