Define BOD, and Explain Why It Can Be Used to Measure

question 15

Essay

Define BOD, and explain why it can be used to measure the pollution level of lakes. Describe how effluents carrying high levels of nutrients can cause eutrophication.

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Definitions:

Thickness of Continental Crust

The measurement of how thick the layer of rocks and sediments making up the continents is, varying from 20 to 70 kilometers.

Magmas

Molten rock stored beneath the Earth's surface, which may cool to form igneous rock or erupt as lava during volcanic activities.

Catskill Delta

An ancient delta located in what is now the northeastern United States, known for its rich sediments that tell a story of Earth’s geological past.

Foreland Basin

A structural basin that forms adjacent to a mountain belt, typically filled with sediments eroded from the mountains.