Conservation

3. the science or practice of farming, including cultivation of the soil for the growing of crops and the rearing of animals to provide food, wool, and other products.
5. The concept of using natural resources at a rate that does not deplete them is called.
7. The destruction of habitats that usually results from human activities.
9. An underground formation that contains groundwater.
13. the action of clearing a wide area of trees.
14. species that enter new ecosystems and multiply, harming native species and their habitats.
15. An increase in the average temperature of the earth's atmosphere (especially a sustained increase that causes climatic changes).

1. Protecting and preserving natural resources and the environment.
2. farming strategy in which large fields are planted with a single crop, year after year.
4. Rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water.
6. Processes by which rock, sand, and soil are broken down and carried away (i.e. weathering, glaciation).
8. Raising marine and freshwater fish in ponds and underwater cages.
10. the variety of life in the world or in a particular habitat or ecosystem.
11. Species that normally live and thrive in a particular ecosystem.
12. The use of Earth's renewable and nonrenewable natural resources in ways that do not constrain resource use in the future.