ECOSYSTEM

The term ecology was first proposed by A.G. Tansley in 1935 but the concept appearced much later . 

An ecosystem is a community of living organisms interacting with each other and their non-living environment.

What makes up an ecosystem?

• All living things (  Biotic) (plants, animals, and bacteria)

• Non living things   (Abiotic)  (the sun, rocks, and soil)

OR

An ecosystem is an ecological unit which includes both biotic and abiotic components.

Ecosystem is the interaction of both biotic and abiotic components.

In other words , Ecosystem is a self- regulated and self-sustaining structural and functional unit of nature which consists of a community of living beings and it's physical environment , both interacting and exchanging materials between them.

Ecosystem can be small and large

Ecosystem is an open system and it has no boundaries.

• Abiotic - # Sunlight

                  # Air

                  # Soil

                  # Temprature

• Biotic -   #Producer (green plants)

                  #consumer

Consumer are divided into 3 types

# Primary consumer

# Secondary consumer

# Tertiary consumer

# Primary consumer

A primary consumer is an organism that feeds on primary producers. ... Primary consumers are usually herbivores that feed on autotrophic plants, which produce their own food through photosynthesis.

# Secondary consumer

Secondary consumers are largely comprised of carnivores that feed on the primary consumers or herbivores. Other members of this group are omnivores that not only feed on primary consumers but also on producers or autotrophs. An example is a fox eating rabbit.

# Tertiary consumer

A tertiary consumer is an animal that obtains its nutrition by eating primary consumers and secondary consumers. Usually tertiary consumers are carnivorous predators, although they may also be omnivores, which are animals that feed on both meat and plant material.