The Caspian Sea

question 35

Multiple Choice

The Caspian Sea

• A) drains into the Mediterranean.
• B) has increased in size over the last three decades.
• C) is substantially threatened by oil-industry pollution.
• D) is in much greater danger than is the Aral Sea.
• E) is the smallest lake in Central Asia.

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Definitions:

Biological Magnification

A chemical pollutant becomes increasingly concentrated as it moves up through food chains.

Food Chain

Description of who eats whom in one path of energy flow through an ecosystem.

Ecoregion

A large area of Earth's surface characterized by a distinct ecological community of plants, animals, and microbial organisms, shaped by similar climate, landform, and soil conditions.

Western Coast

The land along the western edge of a continent that borders an ocean or sea.