Which of the following ecosystems has highest productivity?
Tropical deciduous forest
Temperate coniferous forest
Tropical rain forest
Desert shrub
The number of individuals in each trophic level depends upon
Which one of the following components of ecosystem comes from outside
The number of trophic levels in a food chain is limited to $4$ or $ 5$ because
In an ecosystem
Flow of energy declines from low to higher trophic level in ecosystem, is mainly explained by