A lake is a _________.

In which region of the earth does life exist?

________ is smallest unit of biosphere.

The ecosystem is a community or group of living organisms that live in and interact with each other in a specific environment.

Marine ecosystem is a _________.

Identify the term for the given image.

Complete the following table.

The following images are examples of __________.

                                     

Biome is a___________. 

If all the ecosystems are combined, then it is called________.

Biosphere includes_________.

_________is an example of terrestrial ecosystem. 

____ is a biotic factor.

None of the factors mentioned are living except bacteria

For ecosystem______ is very essential.

Biotics is living things whereas abiotic are non-living things.

Ecosystem is a combination of ____________. 

A group of same species forms __________.

Population is known as inhabitants of the same area.

Wetlands are ______