According to the Principle of Isostasy

question 32

Multiple Choice

According to the principle of isostasy

• A)oceanic crust should stand higher than continental crust.
• B)continental crust should be thinner than oceanic crust.
• C)crustal thickness is directly related to surface elevation.
• D)elevation is independent of crust type.

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Definitions:

Limnetic Zone

The open surface waters in a lake, away from the shore, where sunlight penetrates, supporting planktonic and free-swimming aquatic life.

Lakes

Inland bodies of standing freshwater or, in some cases, saline water, usually larger than ponds and contained by land.

Eutrophic

A condition of water bodies, such as lakes and rivers, characterized by an abundant accumulation of nutrients that promote a proliferation of algae.

Mesotrophic

Lakes and water bodies characterized by an intermediate level of productivity, richer than oligotrophic waters but not as nutrient-rich as eutrophic waters.