Giant Seaweeds, or Kelps, Live in Shallow, Cold, Nutrient-Rich Waters

question 213

Multiple Choice

Giant seaweeds, or kelps, live in shallow, cold, nutrient-rich waters off the coastline of western North America.They attach to rocks and other hard surfaces, and their huge fronds often reach to the surface, forming a dense, complex, photosynthesizing ocean "forest." Which characteristic is true of kelp forests but not of land forests?

• A) They provide considerable habitat for organisms.
• B) They are sessile organisms.
• C) They protect the shoreline from waves and storms.
• D) They add to the oxygen concentration of the surrounding environment.
• E) They retain nutrients by trapping sediment or soil.

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Definitions:

Expansionary Fiscal Policy

A government policy aimed at increasing government spending and/or cutting taxes to stimulate the economy and increase demand.

Transfer Payments

Payments made by the government to individuals or other entities without receiving any goods or services in return, such as welfare or subsidies.

Federal Taxes

Taxes levied by the national government on income, property, sales, and other activities, used to fund public services and programs.

Automatic Stabilizers

Economic policies and programs, such as unemployment insurance and progressive taxes, that automatically adjust to stabilize economic fluctuations.