Multiple Choice
Which type of aquatic environment is most likely to develop a layer of ice during the winter season?
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48. Ecology
Introduction to Aquatic Biomes
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Which of the following best describes a distinguishing feature of freshwater biomes compared to marine biomes?
A
Freshwater biomes are found only near the equator.
B
Freshwater biomes cover a larger area of Earth's surface than marine biomes.
C
Marine biomes are characterized by the absence of any plant life.
D
Freshwater biomes have a much lower salt concentration than marine biomes.
Verified step by step guidance1
Understand the key difference between freshwater and marine biomes: Freshwater biomes have a significantly lower salt concentration compared to marine biomes. This is a fundamental characteristic that distinguishes the two.
Recall that freshwater biomes include ecosystems such as rivers, lakes, streams, and wetlands, where the salt concentration is typically less than 0.05%.
Marine biomes, on the other hand, include oceans, coral reefs, and estuaries, and they have a much higher salt concentration, averaging around 3.5%.
Evaluate the incorrect options: Freshwater biomes are not limited to the equator; they exist globally. Freshwater biomes do not cover a larger area than marine biomes; marine biomes dominate Earth's surface. Marine biomes are not devoid of plant life; they support diverse plant species such as algae and seagrasses.
Conclude that the correct distinguishing feature is the lower salt concentration in freshwater biomes compared to marine biomes.
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