26. The surface water, ground water, ice and atmospheric water
vapor make up the earth’s
______________________________________.
27. Bacteria that convert nitrates into nitrogen gas, thus
allowing it to re-enter the atmosphere, in the process of
_________________.
a. Ammonification
b. Nitrification
c. Denitrification
28. Eutrophication carries excess _______________________ and
_____________________ from fertilizer run-off into waterways, with
deleterious results.
a. Nitrogen and carbon
b. Nitrogen and phosphorus
c. Carbon and phosphorus
d. Sulfur and nitrogen
29. The element found in ALL organic...