The ultimate energy source of the ecosystem is

The driving force of any ecosystem is

What is the primary function of a grazing food chain?

If $10,000 \; J$ of energy falls on a piece of land,what is the energy available at the $T_2$ trophic level (in $; J$)?

If $30 \ J$ energy is trapped at the producer level,how much energy will be available to the peacock as food in the following food chain (in $J$)?
Plant $\rightarrow$ Mice $\rightarrow$ Snake $\rightarrow$ Peacock

During a food chain, the maximum energy is stored in: