Concept explainers
Introduction :
Ecosystem diversity means the variety of ecosystems present in the biosphere. An ecosystem is composed of the abiotic factors and interacting populations that support them. Different location around the world has different abiotic factors that support different types of life.
Answer to Problem 1STP
Correct answer :
The correct answer is option (C) no soil for plants to take root.
Explanation of Solution
Explanation/justification for the correct answer :
Option (C) no soil for plants to take root. The tundra is a treeless biome with a layer of permanently frozen soil. In the polar region, the constant cycles of freezing and thawing do not allow tree roots to grow. So, the correct answer is option (C).
Explanation for incorrect answer :
Option (A) heavy grazing by herbivores. The polar region is a treeless biome where the soil is permanently frozen because of the low temperature. So, this is an incorrect option.
Option (B) little precipitation. The polar region is a treeless biome with average precipitation of 15-25 cm per year. The soil in polar region is permanently frozen because of the low temperature. So, this is an incorrect answer.
Option (D) not enough sunlight. The polar region is very cold and dark much of the year. It is a treeless biome with a layer of permanently frozen soil. In the polar region, the constant cycles of freezing and thawing do not allow tree roots to grow. So, this is an incorrect answer.
Chapter 5 Solutions
Biology Illinois Edition (Glencoe Science)
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