The effect that global warming will have on present day is the increase in average temperature and reduced rainfall. The glaciers around the world will start melting and the sea level will start rising. This will lead to hurricanes and floods. It has the potential to destroy the whole world.
You could name it two ways! You can either do IH or HI. Since there are only two letters, you can only rearrange or name IH 2 different times.
Hope this helps :)
I would say that herding and livestock would not be a major economic activity in SE Asia and that logging, farming and manufacturing are important economic activities. For example, farming produces rice and also tea in this part of the world.