climate change

2. Gasses that can cause the earths temperature to rise
5. a large crater formed by the explosion or collapse of a volcano
6. Large amounts of trapped Carbon are known as carbon ....
8. natural phenomena that occurred before human development in response to changes in temperature, light, rainfall, or changes in limiting nutrients (5,5)
9. Can make soil infertile affects ability to grow crops (4,11)
13. A key contributor to poor water quality is nitrogen, which, applied as?
14. using resources in a way they can be replaced
15. a period between the 14th and 19th centuries when the climate was about 0.6º cooler than average
16. The worlds largest rainforest

1. affects supply of fresh water (5,9)
3. Carbon is realesed into the atmosphere when humans burn these? (6,5)
4. this prevents water, soil and nutrients carried by the stream going further down stream.
7. Forrest provide many services such as absorbing ....
10. Excess nitrogen and phosphorus cause an overgrowth of (5,5)
11. the removal of trees from an area
12. the additional warming caused by human activities that release gasses such as CO2 into the atmosphere is known as the _____ greenhouse effect
17. 10%of Greenhouse gas