These belong to the catergory of primary consumers …..
Snakes and frogs
Water insects
Eagle and snakes
Insects and cattle
What is maximum in a pond-ecosystem
In tropical rain forest most of the energy in ecosystem flows through
$A$ : In secondary productivity, no new organic matter is formed.
$R$ : It is only utilisation of part of food manufactured by primary producers in building of consumer biomass.
In a terrestial ecosystem such as forest, maximum energy is in which trophic level
The biotic part of ecosystem includes