B4 2020 Sugg

2. this greenhouse gas comes from aerosol cans, refrigerators, air conditioning, and more.
4. this layer has no real outer limit
5. greenhouse gases that occur not because of human interaction but because they are a gas in the atmosphere
9. this layer is where humans live and weather occurs
10. this layer contains the ionosphere and the aurora borealis
12. ______ actives are to blame for the increase in greenhouse gases
14. global warming makes the earth _____
16. gas molecules in the lower layers have _____ density and pressure
17. the greenhouse effect mimics what a _______ does for plants
20. coal, oil, and natural gases are examples of _______ that are burned by humans for energy
21. this greenhouse gas comes from evaporation and other processes that release steam
22. gas that is produced through photosynthesis
25. also known as the cutting down of trees and forests is also to blame for the increase in greenhouse gases
26. as altitude increases in the troposphere and mesosphere, temperature...

1. gas molecules in the upper layers have ______ density and pressure
3. produced during the burning of fossil fuels
6. the most abundant gas in the atmosphere
7. this layer contains the ozone layer
8. this greenhouse gas is considered a protectant in the stratosphere but a pollutant in the troposphere
11. the energy of the ____ heats the earth
13. this greenhouse gas not only comes from the burning of fossil fuels but also the decay of organic waste from livestock
15. this layer is the coldest of all the layers in the atmosphere
18. when energy is sent to earth, some of it reflects back into space while the rest is _____ and re-radiated by the greenhouse gases.
19. an overall increase in the temperature of the earth due to an increase in greenhouse gases
23. as altitude increases in the stratosphere and thermosphere, temperature...
24. greenhouse gases ____ heat inside the earth