Petroleum is a ( ) mixture of solid, liquid, and gaseous hydrocarbons that occurs naturally beneath the Earth's surface.
举一反三
- The natural atmosphere that we breathe contains not only gaseous constituents but also large numbers of liquid and solid particles.
- _____ is covered with heavy snow. A: The earth’s surface B: The surface of earth C: The surface earth D: The earth surface
- ______ is covered with heavy snow. A: The surface of earth B: The earth’s surface C: The earths’ surface D: The surface
- An example of this is motion parallel to the earth’s surface.
- Water (cover) most of the earth’s surface.