A food chain starts with
Nitrogen fixing organisms
Photosynthesis
Respiration
Decomposers
If the plant producer dies in the ecosystem, then the system is
Major conduit of energy in land and aquatic ecosystem is transferred through ______ and ______ respectively.
Most animals that live in deep oceanic waters are
$A$ : 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.
$A$- Grasshopper is included in primary consumer.
$R$- Fishes and birds are included in top carnivore.