In what order do a hawk, grass and rabbit form a food chain in a meadow?
Hawk $\rightarrow$ grass $\rightarrow$ rabbit
Grass $\rightarrow$ hawk $\rightarrow$ rabbit
Rabbit $\rightarrow$ grass $\rightarrow$ hawk
Grass $\rightarrow$ rabbit $\rightarrow$ hawk
$10\%$ law of flow of energy in ecosystem was proposed by
If plant (producers) of an ecosystem die, then the system
The second order consumer in a food chain is
In ecological crisis, whom interference play important role
They are not primary producers in an aquatic ecosystem