$1$Below is shown a pond that represents a self-sustaining natural ecosystem with both biotic and abiotic components interacting in a balanced food web. 2026_CBSE_Biology_Set_Region2_Subset_Set1_Q30___p10_25

2026_CBSE_Biology_Set_Region2_Subset_Set1_Q30___p10_25

Based on the diagram, answer the questions : (a) Mention two abiotic components of a pond ecosystem. (b) Differentiate between the roles of producers and decomposers in such an ecosystem. (c) Draw a simple food chain operating in such an ecosystem and label each trophic level.

OR

(c) Why is transfer of energy not 100%efficient between trophic levels?

Biology · Ecosystem