Whale is
Primary producer
Carnivorous, secondary consumer
A decomposer
Herbivorous
Food chain is a series of population, which starts with producers. It is concerning with
Identify the likely organisms $(1), (2), (3)$ and $(4)$ in the food web shown below.
What is common in earthworm, soil mites and dung beetle in an ecosystem?
What is primary productivity? Give brief description of factors that affect primary productivity.
The second trophic level in a lake is