300 Level Department of Science Laboratory Technology exam questions and detailed answers. Download the answers in document format. Correct, detailed, and straightforward answers.
Questions:
a. A stream is capable of purifying itself naturally. Explain how this happens?
b. Discuss in details with the aid of a diagram, the constituents of an ecosystem.
c. List eight parameters for analyzing wastewater
ii. Differentiate between BOD test and COD test.
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