alleryThe flow chart "Sun → producer → consumer → decomposer" describes:
APhotosynthesis only
BA cyclical nutrient flow (option)
CAtmospheric refraction
DOne-way flow of energy through an ecosystem
Answer & Solution
Correct answer: D. One-way flow of energy through an ecosystem
1. Solar energy is captured by producers.
2. It is passed up the consumer chain and finally to decomposers.
3. Energy is dissipated as heat at each step; flow does not reverse.
_Source: syllabus Science, Ch 13 "Our Environment", §13.1.1_
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