Producers, consumers, and decomposers all play important roles in ecosystems. [1] Producers like plants and algae produce their own food through photosynthesis. [2] Consumers such as animals are heterotrophic and obtain carbon compounds by eating other organisms. [3] Decomposers including fungi and bacteria break down dead organic matter and release nutrients back into the environment.

2. Autotrophic= produce their own food
Protoctists= unicellular or multicellular organisms
Heterotrophic = organisms obtaining carbon to grow
And energy from complex organic compounds

3. Living organisms need nutrients to
survive.They have to interact with the
biotopes and with other living things to get
them.
Depending on their relationships organisms
of an ecosystem are classified as
producers,comsumers or decomposers.

4. PRODUCERS
Producers are autotrophic organisms.
The main producers are plants,algae and some
bacteria. They produce their own nutrients
through photosynthesis,using water, minerals and
carbon dioxide,which they take from biotopes .

5. Animals, and some protoctists,are consumers.
They are heterotrophic organisims which mean that
they need to eat other living things.
There are three types :
CARNIVORES
Omnivores
HERBIVORES

6. Fungi,and some bacteria,are decomposers.They obtein energy
and nutrients by decomposing the remains of other living
things.They transform the matter they decompose into
substances including water,carbon dioxide and minerals,and
release them into the soil, the air or the water.

7. How can the ecosystems be classified according to the living
organisms ?
• .
Producers,comsumers or decomposers
How can the producers produce their own food ?
• Through photosynthesis
What do the consumers eat ?
• Other living things.
How decomposers take energy ?
• They obtein energy and nutrients by decomposing the remains of other living
things.
Tell us two examples of producers,two of consumers and two
of decomposers then, say their functions.

8. What a power
point!!!!!