Greenhouse gases will be led to an outbreak of climate change to led the ice start to melt, then in the future, all the ice will all melt and the land will cover with land and led to flooding.

When a city contains too much Greenhouse Gas discharge, the city will have a higher temperature, which might affect the whole world too.

There is three main points of sustainable: (1) dependence on solar energy, (2) Biodiversity, and (3). Having an area or place without any harmful chemical waste of any pollutants. Using renewable energy to help them to produce electricity supplies, use less water and plant more plants to create more green areas and the colour green can comfort your eyes which is proved by scientific research

Having a sustainable city can help citizens to have a better life quantity and better living habits. Government don’t need to worry about further development because having a sustainable city can help to have a stable development and have a clear development path for further development.