The most accurate statement about biomass in these ecosystems is:
The tropical rainforest will have the highest biomass due to its abundant vegetation and year-round growing conditions.
Tropical rainforests typically have the highest biomass among these ecosystems because they possess a dense canopy of trees and diverse plant life, benefiting from warm temperatures, high rainfall, and year-round growing conditions. These factors contribute to a significant amount of organic matter and biomass compared to grassland savannas and deserts.