Global Warming
Across
- 1. Scientists recommend restoring this to help correct global warming.
- 5. when CO2 levels were 280 ppm
- 7. The level of this might decrease in plants as the climate warms.
- 8. As carbon builds up in the atmosphere, there are ______ molecules to reflect heat back to Earth.
- 9. Organic rich soil will store this.
- 12. Scientists are concerned that increase plant productivity takes more of this from the soil.
- 14. What type of EMR waves do greenhouse gases emit?
- 15. CO2 in the air boosts this rate in plants
- 17. Higher temperature and increased moisture interfere with crops due to the growth of ......
- 18. A powerful greenhouse gas that stores 25 times the energy as CO2.
- 19. Many crops experience this as temperature increase.
- 21. Environmental storage reservoirs for carbon.
Down
- 2. CO2 levels of 421 ppm
- 3. Scientists are concerned that when this happens to our permafrost, greenhouse gases will be released.
- 4. A measurement of the average weather for an area over thirty years
- 6. Burning this is a large source of global warming.
- 8. The level of this will decrease in the soil as the climate warms.
- 10. How many years CO2 stays in the atmosphere.
- 11. Even if we stopped emitting carbon into our atmosphere today, CO2 levels in which natural reservoir would continue to increase?
- 13. The environmental conditions of an area at a moment in time.
- 16. Warmer winters and longer growing seasons bring more of these to new territories.
- 20. The top 30 cm of this contain twice as much CO2 as the entire atmosphere.