Unexpectedly, Silicon Valley is neither a place abundant in silicon nor a mountain valley. It has gained its name simply because it is a newly developed center of silicon-based electronics industry.
Asia, the world’s largest continent, is the most geographically diverse, its landforms including giant desert-covered plateaus and such high mountains as the Himalayas, whose Mt. Everest is the tallest in the world.
The Pacific Ocean is nearly as large as the other three combined, its deepest part being 10,973 m below sea level, a distance even greater than the height of the Earth’s tallest peak in the Himalayas.
An island is land completely surrounded by water; earth has countless islands, ranging from Greenland, the biggest one, to tiny spots of land are only a few meters wide. The two biggest islands in China are Taiwan and Hainan.
Global climate changes, mainly seen in the gradual warming of the earth’s atmosphere, are attracting worldwide attention, for such changes could greatly impact the lives of world people.