If all the plants of the world die all the animals will also die due to shortage of

A food chain starts with

If $10,000 \;J$ of energy fall on piece of land, then what is energy available at $T_2$ level?

Assertion : In a food chain, members of successive higher levels are fewer in number.
Reason : Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.

Only a small amount of the energy stored in food is available to the next organism in a food chain because