The basic unit of Nature is

Several food chains interlinked themselves to form a

Example for Succulent plant.

The energy in an ecosystem flows in the form of

Large number of herbivores can be seen in this ecosystem.

All the energy present at a particular level in the food chains of an ecosystem is called

‘Detritus’ is a

The forests that grow where the rivers met with sea are

The food chain starts with

Which of the following is artificial Ecosystem?