The order of organism in an aquatic food chain is
Bacteria $→$ Seal $→$ Diatom $ →$ Fish $→$ Crustacea
Crustacea $→$ Seal $→$ Fish $→$ Polar Bear $→$ Diatom
Polar Bear $→$ Diatom $ →$ Seal $→$ Crustacea
Diatom $→$ Crustacea $→$ Fish $→$ Seal $→$ Bacteria
Nutrient immobilisation
Energy storage at consumer level is called
Which must be preserved in an ecosystem, if the system is to be maintained
Organisms living in open sea are called
The dominant second trophic level, in a lake ecosystem, is