Assertion (A): In a terrestrial ecosystem, a much larger fraction of energy flows through the detritus food chain than through the grazing food chain.
Reason (R): In an aquatic ecosystem, the detritus food chain is the major conduit for energy flow.
Assertion (A): In a terrestrial ecosystem, a much larger fraction of energy flows through the detritus food chain than through the grazing food chain.
Reason (R): In an aquatic ecosystem, the detritus food chain is the major conduit for energy flow.