Which of the following is the source of energy for an ecosystem?

Select the formula for ecological efficiency.

In an ecosystem,if the Net Primary Productivity $(NPP)$ of the first trophic level is $100x \text{ kcal } m^{-2} yr^{-1}$,what would be the Gross Primary Productivity $(GPP)$ of the third trophic level of the same ecosystem?

Snakes generally belong to which trophic level?

In an aquatic ecosystem, which type of food chain is the major conduit for energy flow?

Energy requirement for maintenance of body . . . . . . with successively higher trophic level.