Major conduit of energy in land and aquatic ecosystem is transferred through ______ and ______ respectively.
$GFC, DFC$
$PFC, GFC$
$DFC, GFC$
$GFC, GFC$
Biological equilibrium is an equilibrium among the
Flow of energy declines from low to higher trophic level in ecosystem, is mainly explained by
Why are oceans least productive ?
In what order do a hawk, grass and rabbit form a food chain in a meadow?
The aquatic organism that can actively swim at will against the water current is