Generally the food chain has how many trophic levels
One
Two
Three or Four
Three
Primary producer of an ecosystem is
Transfer of energy from one trophic level to other trophic level is according to the second law of thermodynamics. The efficiency of energy transfer from herbivorous to carnivorous is
In forest ecosystem, fungi is grouped as
The amount of living matter present in an ecosystem at a given time is called
When peacock eats snakes which eat insects thriving on green plants, the peacock is