MOUNTAINS are formed when the plates of Earth's crust crash into each other, and the land pushed upwards .Mountains are also formed when volcanoes erupt and molten rocks build up into steep mounds. There are several mountains on the Earth.The tallest and youngest mountain are the Himalayas.They are formed over last 140 million years. The structure of a mountain should be steep and must have an obvious summit. A Mountain can be divided into zones according to altitude , the difference of temperature, availability...