1. The Water Cycle  Rain, snow, and sleet are examples of this step of the water cycle. a. Condensation b. Precipitation c. Evaporation d. Seepage

2. The Water Cycle  The change of matter from a gaseous phase to a liquid phase is referred to as: a. Condensation b. Precipitation c. Evaporation d. Seepage

3. The Water Cycle  The change of water from liquid to gas is referred to as: a. Condensation b. Precipitation c. Evaporation d. Seepage

4. The Water Cycle  Water evaporates from leaves in a process known as: a. Evaporation b. Transpiration c. Seepage d. Condensation

5. The Water Cycle  Precipitation that moves along the ground and into rivers in streams is referred to as: a. Evaporation b. Runoff c. Seepage d. Transpiration

6. The Nitrogen Cycle  This step occurs when bacteria convert nitrogen gas into organic compounds that living organisms can take up? a. Denitrification b. Assimilation c. Nitrogen fixation d. Ammonification

7. The Nitrogen Cycle  Occurs when bacteria or fungi convert nitrogen gas into ammonium ions. a. Ammonification b. Nitrogen fixation c. Nitrification d. Deposition

8. The Nitrogen Cycle  Occurs when bacteria in soil convert nitrate ions into nitrogen gas. a. Denitrification b. Nitrogen fixation c. Ammonification d. Assimilation

9. The Nitrogen Cycle  When living organisms take up nitrogen…. a. Nitrogen fixation b. Denitrification c. Assimilation d. Ammonification

10. The Carbon/Oxygen Cycle  What would happen to our ecosystem if we were to get rid of all plant life?

11. The Carbon/Oxygen Cycle  What would happen to our ecosystem if we were to take away the majority of animal life?

12. The Carbon/Oxygen Cycle  What would happen, if more plant life were added to our ecosystem?