The most problem is the increasing of seawater level; the coastal cities will be in danger because the increasing in temperature is going to melt the ice in the South and North Pole. Another problem is climate changing. Temperature changing will affect the climate in many ways. There will be more storms, floods and unusual rain seasons and some places are going to suffer from dryness. A third problem by global warming is affect to animals, fish populations, while some insects which spread disease might become more common. Humans can do a lot to decreasing Global warming effect and save the planet.