2.  The manufacturing of machinery and industrial equipment.

3.  The manufacturing of high- end electronics and specialty tools.

4.  Foods with genes altered to make them grow bigger or faster or be more resistant to pests.

5.  A document signed in the city of Maastricht, Netherlands that created the European Union.

6.  A way of farming in dry areas that produces crops without any irrigation and relies on farming methods that conserve soil moisture.

7.  Wet or dry acid pollution that falls to the ground; it harms not only the natural environment but also historic buildings, statues, bridges, and stained glass windows.

8.  People concerned with the quality of the environment.

9.  An overall increase in world’s average temperature; a warmer climate will melt polar ice caps and mountain glaciers, causing ocean levels to rise and submerge coastal areas.