Atmosphere

5. Harmful substances in the air, often caused by factories or vehicles.
9. Gas that makes up 21% of the atmosphere and is essential for respiration.
10. The part of space visible from Earth, where clouds and the sun are located.
12. Formations of water vapor that condense in the air.
13. Thermal energy that can warm the air and Earth's surface.
14. The amount of water vapor present in the air.
15. The force exerted by air on the Earth's surface due to its weight.
16. The measure of heat or cold in the environment.

1. A gas produced by breathing and burning that plants use to make food.
2. The condition of the atmosphere at a certain time and place (like rain, sun, or wind).
3. Layer of the atmosphere where weather phenomena occur.
4. The usual weather conditions in a place over a long period of time.
6. A gas found in the upper atmosphere that protects us from harmful ultraviolet rays.
7. Layer of gases surrounding the Earth.
8. Layer of the atmosphere above the troposphere.
11. Movement of air caused by temperature differences.