An ore is a mineral which has a valuable metal inside it. Ores are usually extracted by being mined. They can sometimes be found on the Earth's surface. Most ores are chemical compounds such as oxides or sulfides.
The Gobi is a large desert<span> region in </span>Asia<span>. It covers parts of </span>northern<span> and </span>northwestern China<span>, and of southern </span>Mongolia<span>.</span>
