Ответ:

1. Experts say that if the temperature rises, London could be under threat. London is going under water not only because of rising water levels, but also because of the melting of glaciers in Scotland. In 1984, the Thames Barrier Dam was opened to protect the river from flooding. At that time, it was assumed that the need for a dam would arise no more than three times a year. However, the barrier is already used up to seven times a year, and what will happen when the world's oceans rise by half a meter.

2. There are fears of these cities of the Russian Federation, to go under water: the Krasnoyarsk Territory, the Komi Republic, the Murmansk and Arkhangelsk regions.

3. The effects of global warming — economic and social changes caused by greenhouse gas emissions. There is a scientific consensus that climate change is indeed happening, and that human activity is the main driver. Many of the effects of climate change, such as the retreat of glaciers, earlier flowering of plants, and changes in agricultural productivity are already being observed today.