Question

what is the criteria for being calloda
megacity​

Answer 1

Explanation:

To qualify as a megacity under the UN definition, an urban area must have a population of 10 million people. The UN takes into account urban sprawl and measures populations beyond official city limits. On these criteria, India currently has five megacities.

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Answer 2

Answer:

Megacities are often agglomerations, created when two or more towns and cities grow so large that they join together. This is slightly different from a conurbation which occurs when two cities become treated as a single urban area, but there may still be green space between them.

At the start of the 20th century, only London and New York could be considered megacities. At that time, just 2% of the world’s population lived in cities. The following years saw an increase in the number and a change in distribution, to now when over 50% of people live in cities producing 80% of the world’s economic output. Megacities are now growing faster in the developing world compared to the richest countries.

Due to their increasing size and the sheer number of people in them, megacities have specific problems such as water supply, waste management and the sustainability of the housing stock.

The site of most megacities is the same as any other large city:

An adequate supply of fresh water, usually from a major river

Often coastal which makes it easy for trade, and therefore employment

A large area of flat land suitable for building

Land that is generally well drained, although the increase in the size of megacities in the second half of the 20th century has happened so recently that technological solutions have been found for poor drainage in some places

However, megacities have often not had the requirement to be good defensive sites as the world has been more peaceful in the modern era. Things like hilltops, river meanders and coastal cliffs are frequently not site factors for megacities. Similarly the site often doesn’t have the resources to support the population on site. For example, water supplies that were historically on site (fresh water springs, and rivers) are more likely to be piped from the surrounding rural areas.

Explanation: