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Questions and Answers
Which of the following best describes the role of nutrient recycling in nature?
Which of the following best describes the role of nutrient recycling in nature?
- Nutrient recycling prevents energy loss in food chains.
- Nutrient recycling ensures a constant supply of energy in the ecosystem.
- Nutrient recycling is responsible for the unidirectional flow of energy in ecosystems.
- Nutrient recycling involves the continuous reuse of nutrients by living organisms. (correct)
What is the main difference between a food chain and a food web?
What is the main difference between a food chain and a food web?
- A food chain represents a single pathway of energy flow, while a food web consists of multiple interconnected food chains. (correct)
- A food chain includes decomposers, while a food web does not.
- A food chain is more complex than a food web.
- A food web illustrates trophic levels better than a food chain.
Why is energy said to flow through an ecosystem and not recycle like nutrients?
Why is energy said to flow through an ecosystem and not recycle like nutrients?
- Energy is lost as heat at each trophic level, preventing its reuse.
- Energy is recycled by producers for their own use, leaving less for consumers.
- Energy is constantly replenished by the sun, allowing it to flow unidirectionally through trophic levels. (correct)
- Energy is stored within organisms and cannot be reused by others.
Which of the following characteristics best describes soil?
Which of the following characteristics best describes soil?
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How do the various types of soils benefit both nature and human beings?
How do the various types of soils benefit both nature and human beings?
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