31.   They have been used to cut strips through the vegetation to open up areas while leaving some of the vegetation for fish and other forms of aquatic life.

32.   Typically, hemlock stands grow along streams, and the shade they provide keeps the water temperature right for trout and other aquatic life that require cold water.

33.   When the algae die and decompose, the process depletes the oxygen, leaving an inadequate supply to support fish and other aquatic life.

34.   When oxygen is depleted, fish and other aquatic life are choked.

35.   Algae thrives on the excess nutrients and hogs the oxygen in the water that is needed by fish, shrimp and other aquatic life.

36.   Areas planning to expand snowmaking were penalized because environmentalists claim it reduces the flow of streams and can hurt aquatic life.

37.   Both ingredients are essential for aquatic life.

38.   But people -- not just aquatic life -- are at risk because of the spill, said Predrag Prolic, a professor of chemistry and toxicology at Belgrade University.

39.   He said the levels were low enough not to affect most aquatic life, but would be devastating to birds who he said have lower immune systems.

40.   Herbicides can adversely affect aquatic life and drinking water and must be constantly monitored.