Source of energy in an ecosystem is
Sun
$ATP$
Sugar made by plants
Green plant
In a terrestial ecosystem such as forest, maximum energy is in which trophic level
Trees $\rightarrow$ Birds $\rightarrow$ Lice $\rightarrow$ Bacteria. Thus food chain is
When food energy passes from herbivores to carnivores
Major conduit of energy in land and aquatic ecosystem is transferred through ______ and ______ respectively.