Meteorological ball video
1. There will be more infectious diseases. Excessive emission of carbon dioxide will raise the global temperature, which is conducive to the growth of more bacteria and viruses. So there may be more infectious diseases, which may threaten the health and life safety of more people.
Second, the global sea level will rise. As the global temperature rises, glaciers in the North and South poles will melt in large quantities. Leading to global sea level rise, leading to smaller and smaller land area. At the same time, some coastal cities may be submerged by seawater, which will cause great damage to cities.
Third, some extreme weather may be caused by rising temperature and rising sea level, and glaciers in the polar regions will continue to melt. Therefore, there may be some extreme weather on the earth, such as ocean storms. The destructive power of extreme weather is amazing, which will not only threaten people's safety, but also increase national losses.
Therefore, through the above analysis, it is not difficult to understand why the BBC encourages everyone to watch videos in standard definition mode. However, some videos don't need to be watched in HD mode. For example, news reports, standard definition mode is enough.