$A$ food chain starts with

The ultimate energy source of the ecosystem is

The number of individuals in each trophic level depends upon

"During the transfer of energy from one trophic level to another, some energy is lost as heat." Which law of thermodynamics does this statement represent?

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

In relation to energy transfer in an ecosystem, explain the statement: "$10 \; kg$ of deer's meat is equivalent to $1 \; kg$ of lion's flesh".