Which must be preserved in ecosytem, if the sytem is to be maintained

Options

A. Producers and carnivores
B. Producers and decomposers
C. Carnivores and decomposers
D. Herbivores and carnivores

Answer

B

Explanation

* Producers play on important role in the food chain as they fix solar energy and synthesize food by the process of photosynthesis and provide energy to different organisms at different trophic level.
* Decomposer decay dead organic matter and thus exchange and circulate nutrients in a food chain.