When peacock eats snakes which eat insects thriving on green plants, the peacock is
A primary consumer
A primary decomposer
Final decomposer
The apex of food pyramid
Energy flow and energy transformations in living systems strictly conform to the
Flow of energy declines from low to higher trophic level in ecosystem, is mainly explained by
An ecosystem must have continuous external source of
The trophic level of Cuscuta, Orobanche and Albugo is