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In the context of ecological succession, what is likely to happen to an ecosystem after a major disturbance such as a wildfire or clear-cutting, if left undisturbed for a long period of time?
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48. Ecology
Introduction to Ecology
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How do plants interact with other parts of the food chain? Choose the best answer.
A
They serve as primary producers, converting sunlight into chemical energy that supports consumers.
B
They primarily compete with carnivores for food resources.
C
They act as decomposers, breaking down dead organic matter.
D
They are secondary consumers that feed on herbivores.
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Step 1: Understand the role of plants in the food chain. Plants are autotrophs, meaning they produce their own food through photosynthesis, converting sunlight into chemical energy stored in glucose.
Step 2: Recognize that plants are primary producers. They form the base of the food chain, providing energy for herbivores (primary consumers) and indirectly for carnivores (secondary and tertiary consumers).
Step 3: Eliminate incorrect options. Plants do not compete with carnivores for food resources, as carnivores consume other animals. Plants are not decomposers, which break down dead organic matter, nor are they secondary consumers, which feed on herbivores.
Step 4: Focus on the correct answer. Plants serve as primary producers, supporting the entire food chain by converting sunlight into chemical energy.
Step 5: Relate this concept to ecosystems. The energy flow begins with plants, emphasizing their critical role in sustaining life and maintaining ecological balance.
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