environment

4. the long term rise of the planet's temperatures
5. a sustained period
9. the action of clearing a wide area of trees
11. the process by which a fertile land changes itself into a desert by losing its flora and fauna

1. the introduction of contaminants into the natural environment that cause adverse change
2. condition in which a person does not have the physical or financial capability to eat sufficient food to meet the needs
3. the reduction of adverse effects of waste on human health,the environment, planetary resources
6. the significant variation of average weather conditions becoming,warmer, wetter,or drier—over several decades or longer
7. are anything that has utility and adds value to your life. Air, water, food, plants, animals, minerals and
8. any species which is in danger of extinction throughout all or a significant portion of its range
10. exists in nature that has utility for mankind