An ecosystem consists of three main components: 1) a habitat, 2) the living things within that habitat, and 3) the relationships between the living things and their habitat. There are two types of ecosystems - natural ecosystems that form from nature, such as temperate forests, jungles, and deserts, and man-made ecosystems like cities, crop fields, and pastures. Ecosystems can experience natural changes over long periods of time or man-made changes, both beneficial changes through conservation and reforestation or harmful changes like pollution and deforestation.

1. ECOSYSTEMS

2. An Ecosystem is the living things that live
in a habitat and their relationship
between each other and the habitat they
live in.
WHAT IS AN ECOSYSTEM?

3. 1 - HABITAT:
It is the place where all these living things
live together. Different habitats have specific
characteristics like its water, humidity,
temperature, sunlight…
There are two large groups of habitats:
Aquatic Terrestrial

4. 2 - LIVING THINGS
They are the different species that live in an
Ecosystem
3 - RELATIONSHIPS
Relationships between the living things of an
ecosystem can be among the same species
or among different species

5. Food chains
The food chains shows us the food
relationships between living things
1º 2º 3º 4º

6. TYPES OF ECOSYSTEMS
Natural Ecosystems
They are made by Nature
Man-made Ecosystems
They are made by humans

7. Natural Ecosystems

8. 1 - Temperate forests
Characteristics: Cold winter, mild summer, moderate rainfalls…
2 - Jungles
Characteristics: High temperatures, lots of rainfall, tall trees…

9. 3 - Savannahs
Characteristics: High temperatures during day and low temperaturtes
at night, little rainfall (except during rainy season), isolated trees…
4 - Colddeserts
Characteristics: Low temperatures, snow, little vegetation…

10. 5 - Warm deserts
Characteristics: High temperatures during day and low temperaturtes
at night, it rarely rains, little vegetation…
6 - Marine Ecosystems
Characteristics: They are seas and oceans
Deep sea Surface

11. 7 - Freshwater Ecosystem
Characteristics: They are rivers, lakes, lagoons or ponds.
River
Lake
Lagoon
Pond

12. Man-made Ecosystems

13. 1 - Cities and towns
Characteristics: There are buildings, roads and living things like people
2 - Crop fields, pastures and meadows
Crop field Pasture Meadow

14. CHANGES IN ECOSYSTEM
Natural changes
Man-made changes

15. 1 - Natural changes
Characteristics: Ecosystems change over time until, after many
years, they reach their ecological balance.

16. 2 - Man-made changes
BENEFICIAL HARMFUL
Conserving natural habitats
Reforestation
Dumping rubbish
Deforestation and fires

18. are made up of are changes are
1
HABITAT
NATURAL
ECOSYSTEMS
MAN-MADE
ECOSYSTEMS
2
LIVING THINGS
3
RELATIONSHIPS
Can be
1 – Temperate forest
2 – Jungles
3 – Savannahs
4 – Cold deserts
5 – Warm deserts
6 – Marine ecosystem.
7 – Freshwater ecosystem
Can be
1 – Cities and Towns
2 – Crop fields,
pastures and
meadows
NATURAL
CHANGES
MAN-MADE
CHANGES
Can be
BENEFICIAL HARMFUL