Introduction to Ecosystems Review Lesson

Introduction to Ecosystems

What is an ecosystem?

• An Ecosystem is a word used to describe all the living things and nonliving things living in an area (environment).

  
  

• They all depend on each other for their survival.

  
  

• Living Things in an ecosystem are known as biotic factors.

• Nonliving Things in an ecosystem are known as abiotic factors.

Biotic Factors

Biotic factors are organized in the following order: organisms, population, and community.

Organism

An organism is one living thing.

Population

A population is a group of one type of organism living in the same area.

Community

A community is all of the different living things that live in one area.

(Population of different living things)

Multiple Choice

The picture is showing an example of a/an ________.

• organism

• population

• community

• ecosystem

Multiple Choice

The picture is showing an example of a/an_______.

• organism

• population

• community

• ecosystem

Multiple Choice

The picture is showing an example of a/an ______.

• organism

• population

• community

• ecosystem

Multiple Choice

The picture is showing an example of a/an ________.

• organism

• population

• community

• ecosystem

Multiple Choice

The picture is showing an example of a/an ________.

• organism

• population

• community

• ecosystem

Multiple Choice

The picture is showing an example of a/an _______

• organism

• population

• community

• ecosystem

Abiotic Factors

Nonliving Things in an ecosystem are known as abiotic factors. This means ‘without life’.

Multiple Select

Which of the following are examples of an abiotic factors?

• corals

• water

• sunlight

• fishes

Multiple Select

Which of the following are examples of an biotic factors?

• corals

• water

• sunlight

• fishes