Which of the following is producer of plant kingdom
Melia
Ficus
Ziziphus
All the above
In an ecosystem, the largest population is of
The rate of decomposition is faster in the ecosystem due to following factors $EXCEPT$
The number of trophic levels in a food chain is limited to $4$ or $ 5$ because
The mass of living material at a trophic level at a particular time is called
Frog, that feeds on insects, is a