science ecosystems

2. WHAT’S AN ECOSYSTEM?

3. An ecosystem is made up of all the living things
and all the non-living things components that
function together in one place.

4. Ecosystems can be as small as a puddle or as
big as the African savanna.

5. All ecosystems are made up of two components:
• LIVING THINGS
• NON-LIVING THINGS (THE ENVIRONMENT)

6. LIVING THINGS
(BIOTIC FACTOR)
These are the plants and animals living in the
ecosystem.

7. NON - LIVING THINGS
(ABIOTIC FACTOR)
This is everything which affects these living things.
For example:
- Temperature
- Water
- Type of soil
- Types of rock.

9. ECOSYSTEM

11. LIVING THINGS
Living things have different needs to live.
They live in places where they can satisfy their
needs.

12. LIVING THINGS
All plants need water and sunlight. However…
WEEPING WILLOWS
They need a lot of water.
They usually grow near rivers.
CACTI
They don’t need much water.
They grow in deserts.

13. LIVING THINGS
Animals need different things, too.
Fish need to live in
water to breathe.
Some birds need to live in a place with
trees so they can build their nests.

16. FORESTS
They have a lot of trees.
These provide food and shelter for animals.

17. GRASSLANDS
They have lots of grass.
Large hervibores eat the grass.

18. DESERT
There aren’t many plants and animals because
it doesn’t rain very much.

20. FRESHWATER ECOSYSTEM
These are found in rivers, streams and lakes.

21. SALTWATER ECOSYSTEM
These are in the sea. They are found on the
coasts, in coralreefs and in the open sea.

26. • https://www.youtube.com/watch?v=sKJoXdrO
T70
• SONG

29. FEEDING RELATIONSHIPS
In an ecosystem, each type of living thing
needs different food.

30. FEEDING RELATIONSHIPS
PRODUCERS
Plants produce their own food. They are called
producers.
(autotrophs)
Plants are essential to ecosystems because they
produce the food which all other living things
need.

31. FEEDING RELATIONSHIPS
CONSUMERS
Animals are called consumers because they eat,
or consume, other living things. (heterotrophs)

32. FEEDING RELATIONSHIPS
CONSUMERS
Herbivores eat plants.
Carnivores eat other animals.
Omnivores eat either plants o other animals.

33. FEEDING RELATIONSHIPS

34. FOOD CHAIN

35. FOOD CHAIN
To show how living things feed off other living
things in an ecosystem, we can draw them in a
row and link them with arrows.
This is called
a food chain.

36. ARROWS
ROW

39. FOOD CHAIN
In a food chain, the animal that eats the
producer is called a primary consumer.
The other consumers are called secondary
consumers, tertiary consumers, final
consumers, etc.

41. FOOD CHAIN
Different rows.

45. • VIDEO1
• VIDEO2
• THE LION KING1
• THE LI0N KING2
• SONG "WRECK-IT RALPH“ / SONG2
• THE FOOD CHAIN GAME