Multiple Choice
Which of the following structures is not involved in an organic reaction mechanism?
3. Acids and Bases
Organic Chemistry Reactions
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Which of the following is a reason why food chains in ecosystems are relatively short?
A
Energy is lost at each trophic level, limiting the number of levels.
B
Producers at the base of the food chain have unlimited resources.
C
Nutrient recycling is more efficient in longer food chains.
D
Predators at the top of the food chain reproduce at a faster rate.
Verified step by step guidance1
Understand the concept of a food chain: A food chain represents the flow of energy and nutrients from one organism to another within an ecosystem.
Recognize the role of trophic levels: Each step in a food chain is called a trophic level, starting with producers (like plants) and moving up to various levels of consumers (herbivores, carnivores, etc.).
Identify the energy transfer between trophic levels: Energy is transferred from one trophic level to the next, but not all energy is efficiently passed on. Typically, only about 10% of the energy is transferred to the next level.
Consider the implications of energy loss: Due to the significant energy loss at each trophic level, there is a limit to how many levels can exist in a food chain. This is why food chains are relatively short.
Evaluate the options given: The correct reason for short food chains is the energy loss at each trophic level, which limits the number of levels. Other options do not accurately explain the length of food chains.
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