What is common to earthworm, mushroom, soil mites and dung beetle in an ecosystem.

Define self sustainability.

Given below is a figure of an ecosystem. Answer the following questions.

i. What type of ecosystem is shown in the figure.

ii. Name any plant that is characteristic of such ecosystem.

Organisms at a higher trophic level have less energy available. Comment.

The number of trophic levels in an ecosystem are limited. Comment.