Global warming is a increase in the overall temperature of the earths atmosphere generally attributed to the greenhouse effect cause by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants. What will happen is in different zones may have warmer winters, more rainfall, rising sea level, or droughts. With that being said the animals and crops in that area would be unable to adapt to the different climate changes. Eventually, the poor countries will not be able to pay for medical and different needs due to the climate changes and human population keeps grows. The earth with run out of resources because we did not take good enough care of the planet and something catastrophic will happen.