Science

3. a green house gas that is over 300 times more effective at trapping heat in the atmosphere than carbon dioxide.
5. due to having the maximum number of valence electrons their outer shell can hold.
6. a mixture mainly of oxygen and nitrogen.
8. A gas, such as oxygen or nitrogen, that was formerly thought to be impossible to liquefy.
10. Water in its gaseous state
11. invisible and the life-supporting component of the air.
13. Powerful green house gas and it is the simplest hydrocarbon.

1. they represent a tiny portion of the atmosphere as a whole.
2. it likes absorbing infrared radiation.
4. The kinetic energy associated with the random motions of the molecules of a material or object; often used interchangeably with the terms heat and heat energy.
7. co2
9. I keep heat in but it can't escape.
11. fresh invigorating air, especially that blowing onto the shore from the sea.
12. the process where sun gives leaves light to grow and eat and drink making them turn green.