Down the Drain

Students examine the following concepts: If water supplies contain materials which rot or decompose, oxygen is used. Decay and decomposition require vast supplies of oxygen. The use of oxygen for decay of wastes may be a life or death occurrence for organisms such as protozoa or fish. They need oxygen to live.

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Resource Details

Grade
6th - 12th
Subjects
Life Science
1 more...
Resource Type
Lesson Plans
Duration
1 hr
Year
1991