Science :)

4. the science or practice of farming
5. taxes on environmentally harmful activities and products
6. government payment to encourage or protect a certain economic activity
9. an increase in the percentage in the number of people living in urban settlements
12. the cultivation of seafood under controlled conditions
13. the introduction of dangerous chemicals, disease, or infectious materials
15. process in which mined land is recovered with soil and replaced with vegetation

1. water below the ground that makes up 1/3 of the Earth's freshwater
2. a rock's ability to hold water
3. meeting the needs of the present without compromising the ability of future generations to meet their own needs
7. any organism that damages valuable crops
8. the condition of producing adverse bodily effects due to poisonous qualities
10. cutting of large forest areas for human activity
11. deposits of minerals that are large enough to be mined for a profit
14. destruction of vegetation