Across
- 2. the rigid outer part of the earth, consisting of the crust and upper mantle
- 6. the lowest region of the atmosphere
- 8. The envelope of gases surrounding the earth or another planet
- 9. the regions of the surface and atmosphere of the earth or another planet occupied by living organisms
Down
- 1. The movement of liquids and gases that is generally referred to as
- 3. he emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.
- 4. all the waters on the earth's surface
- 5. the action of one object coming forcibly into contact with another
- 7. the chemical element of atomic number 6, a non-metal which has two main forms
- 8. giving explanation or comment