The climate change

http://tw.news.yahoo.com/article/url/d/a/090219/78/1eps8.html
The climate change on the earth, had effect on the number of birds coming to Taiwan. because the climate is getting hotter and hotter in Taiwan. Taiwan is no longer a capable place for the birds, so every year the number of birds coming to Taiwan is decreasing. I think we have to react to this problem fast, or else maybe one day Taiwan will be as hot as the equator.

Compare and contrast maya technology and other civilization

I think the biggest differences between the mayan and the other civilization, is that the Mayans had city states, which the other civilization don’t. the Mayans had a lot of different cities and they were all called the Mayas, but the other civilizations almost only had one city. I think this is one of the biggest difference between the Mayas and the other civilizations.
Some of the similarities including the technology they develop, and the irrigation system, and the government. They are all some kind similar.