There are generally a greater number of individuals at the lower trophic levels of an ecosystem.

At one trophic level,an average of $10 \%$ of the energy taken is turned into its own body and made available for the next level of consumers. What happens to the rest of $90 \%$ of the energy?

$A$ detritus food chain begins with which organism?

What will happen if the deer is missing in the food chain given below?
Grass $\to$ Deer $\to$ Tiger

In the following food chain,grass provides $4000 \ J$ of energy to the grasshopper. How much energy will be available to the snake and the frog? Grass $\rightarrow$ Grasshopper $\rightarrow$ Frog $\rightarrow$ Snake.

Food web increases the stability of an ecosystem. Justify.