Environmental Science

4. a type of extraction that obtains natural gas by fracturing the rocks
5. a geographic area that has a common drainage location for water
8. the system in living organisms that regulates hormones and development
9. if the growth rate is 10 percent, then the doubling time is ___ years
10. the number of layers in the atmosphere BELOW the thermosphere
11. type of soil that has a relatively even mix of sand, silt and clay
15. a measure of the suspended particulates in water
16. an organism that gets impacted by bleaching
18. the type of growth demonstrated by a J-shaped curve
20. three of the answers to this crossword are numbers, put them in ___ order to get the code for the next lock

1. a type of organism that gets its energy from the sun directly
2. the liquid that accumulates in landfills
3. a species that is not native to an area and causes problems for the local ecosystem
6. a type of power generated by moving water, usually in a dam
7. practices that will allow the repeated use of resources for generations without running out
12. the chemical name for natural gas
13. the amount of lead that is considered safe (a number)
14. the most efficient type of irrigation
17. protects us from UV rays in the stratosphere, but is a pollutant in the troposphere
19. the non-living components of an ecosystem.