Block 2 2020 Patel

4. 85 percent of the greenhouse effect is by this
6. non toxic, non flammable chemicals that contain carbon, chlorine, fluorine
11. coldest atmospheric layer
13. reflects absorbed heat in all directions of the earth
16. the lightest atmospheric gases such as hydrogen and helium exist in this layer
20. released by humans not natural
21. caused by burning of fossil fuels and growth of animal agriculture
22. occurs in the process of photosynthesis
23. 90% of the ozone layer is found here
25. a set of layers of gases surrounding the earth. It is set in place by gravity
26. a source of greenhouse emissions

1. longest lasting greenhouse gasses emitted by human activities
2. natural gas that comes from sources such as wetlands,and thermogenic sources such as oil and gas production
3. chemical equation for carbon dioxide
5. 0.93 percent of the earth's atmosphere is composed of this
7. Occurs when population increases, which causes more carbon dioxide to release
8. largest amount of gas in the atmosphere
9. the atmospheric layers are based on this
10. occurs when the planet absorbs more energy from the sun than it can radiate back to space
12. the hottest layer in the atmosphere
14. chemical equation for methane
15. carbon travels from the atmosphere into organisms and the earth and back into the atmosphere
17. enters the atmosphere from the ocean
18. forms during the burning of fossil fuels
19. this layer grows and shrinks depending on the energy it absorbs from the sun
24. densest atmospheric layer