A. Lake ecosystem
A.
B. Grassland
B.
C. Forest ecosystem
C.
D. Pond ecosystem
D.
Correct Answer: C
সঠিক উত্তর: C
Explanation
ব্যাখ্যা
Forest ecosystems have the maximum biomass due to their high density of large plants, especially trees, which live for a long time and accumulate significant organic matter. Forests also support a diverse range of plant and animal species across multiple trophic levels, all of which contribute to the total biomass. Globally, most living biomass is found in forests.