The reservoir for the sedimentary cycle exists in

An ecosystem contains

Which of the following organisms are placed in the third trophic level in an ecosystem?

What is an incomplete ecosystem? Explain with the help of a suitable example.

$A$: Stratification helps in the accommodation of a large number and types of plants in the same area.
$R$: It is the occurrence of horizontal zonation in the ecosystem.

What is formed by the interaction between biotic communities and their environment?