Why Are Many Contaminants Found at Higher Concentrations in Polar

question 6

Multiple Choice

Why are many contaminants found at higher concentrations in polar bears and people living in Greenland than they are in bears and people living in temperate and tropical areas?

• A)Polar bears and people living in Greenland eat penguins,which are naturally high in toxic contaminants.
• B)The ice sheets in Greenland,which provide both people and polar bears with fresh water,were contaminated as a result of the Chernobyl nuclear accident.
• C)Most of Greenland's GDP comes from importing toxic chemicals for disposal deep beneath its ice sheets.
• D)There are fewer regulations regarding the release of toxic pollutants in Greenland than in other regions of the world.
• E)Global atmospheric circulation carries airborne toxins toward the poles,where their deposition exceeds evaporation.

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Definitions:

Electromagnetic Energy

Electromagnetic energy is a form of energy that is propagated through space or matter, comprising both electric and magnetic wave components.

Fossils

Remains or impressions of ancient organisms preserved in rock or other geological materials.

Impact Craters

Circular depressions on the surface of planets, moons, or other celestial bodies, formed by the high-speed impact of a meteoroid, asteroid, or comet.

Point Bar

A depositional feature made of sand and gravel that forms on the inside bend of streams and rivers.