Across
- 4. traps the heat from the sun to keep us warm and cozy
- 6. the gaseous mixture that surrounds Earth
- 8. the layer that protects living things from harmful sunrays
- 9. mainly filled with ozone gas and has the ozone layer
- 11. the last outermost layer of the atmosphere that disappears gradually into space
- 12. warming increase of Earth's average temperature because of the greenhouse effect
Down
- 1. the thin layer of gases that absorbs much of the sun's light and radiation
- 2. the harmful radiation of the sun
- 3. the coldest atmospheric layer
- 5. the first and closest layer to the surface of the Earth
- 7. chemicals that are used in items we have in our daily life
- 10. rocky objects that orbit the sun