This document provides information about ecosystems and environmental concepts. It defines key terms like species, population, community, ecosystem, biosphere. It explains that an ecosystem includes the living community and surrounding non-living environment. Different types of ecosystems are described like terrestrial and aquatic. Relationships between living things in an ecosystem like feeding, competition and cooperation are outlined. The document also discusses how humans alter ecosystems directly through activities like logging and fishing or indirectly through pollution and desertification.

1. Units 3 and 4
ECOSYSTEMS
Natural Science
5 Year
Marta

2. What do I know?

3. What do I know?

4. ENVIRONMENT
OUR ENVIRONMENT

5. PHYSICAL
ENVIRONMENT
BIOLOGICAL
ENVIRONMENT
ENVIRONMENT
OUR ENVIRONMENT

6. PHYSICAL
ENVIRONMENT
BIOLOGICAL
ENVIRONMENT
ENVIRONMENT
It is the combination of the
NON-LIVING components
OUR ENVIRONMENT

7. PHYSICAL
ENVIRONMENT
BIOLOGICAL
ENVIRONMENT
ENVIRONMENT
It is the combination of the
LIVING components
It is the combination of the
NON-LIVING components
OUR ENVIRONMENT

8. FACTORS THAT AFFECT THE
PHYSICAL ENVIRONMENT

9. FACTORS THAT AFFECT THE
PHYSICAL ENVIRONMENT
LIGHT TEMPERATURE SALINITY

10. • It is a group of individuals with similar
characteristics that can reproduce within their
group.
• For example: frogs, dogs, cats, parrots…
A SPECIES
•
•
•
•
A BIOLOGICAL ENVIRONMENT

11. • It is a group of individuals with similar
characteristics that can reproduce within their
group.
• For example: frogs, dogs, cats, parrots…
A SPECIES
• It includes all of the individuals of the same
species living in a particular place.
• For example: all the frogs living in a lake.
A POPULATION
•
•
A BIOLOGICAL ENVIRONMENT

12. • It is a group of individuals with similar
characteristics that can reproduce within their
group.
• For example: frogs, dogs, cats, parrots…
A SPECIES
• It includes all of the individuals of the same
species living in a particular place.
• For example: all the frogs living in a lake.
A POPULATION
• It includes all the populations living in a particular
place.
• For example: all of the frogs, aquatic plants,
insects and fish that live in a lake.
A COMMUNITY
A BIOLOGICAL ENVIRONMENT

13. OK, now I know…
-What environment means.
-What biological environment means.
-What physical environment means.
BUT WHAT IS AN
ECOSYSTEM?

14. A BIOLOGICAL ENVIRONMENT
• It is a group of individuals with similar
characteristics that can reproduce within their
group.
• For example: dogs, cats, parrots…
A SPECIES
• It includes all of the individuals of the same
species living in a particular place.
• For example: all the frogs living in a lake.
A POPULATION
• It includes all the populations living in a particular
place.
• For example: all of the frogs, aquatic plants,
insects and fish that live in a lake.
A COMMUNITY

15. AN ECOSYSTEM
PHYSICAL
ENVIRONMENT
• It includes all the NON-LIVING things
• For example: water, soil and air.
• It includes all the populations living in a particular place.
• For example: all of the frogs, aquatic plants, insects and
fish that live in a lake.
A COMMUNITY
AN ECOSYSTEMAN ECOSYSTEM

16. 1. Define species, habitat, population, community, ecosystem and
ecology
https://www.youtube.com/watch?v=EKIJjFAyAaA
2. Ecology introduction
https://www.youtube.com/watch?v=EdKhQVHc3Ao
A FEW VIDEOS TO HELP YOU
UNDERSTAND THESE CONCEPTS:

17. •
•
•
RELATIONSHIPS BETWEEN LIVING
THINGS

18. Feeding
relationships
• One living thing
often feeds on
another.
Competition
• Living things
compete for the
same resources
(food, water,
space, oxygen…).
Cooperative
relationships
• Living things join
together for a mutual
advantage.
RELATIONSHIPS BETWEEN LIVING
THINGS

19. THE BIOSPHERE
It is the part of the Earth where LIVING THINGS are found.
There are many different ECOSYSTEMS in the BIOSPHERE.
It is the part of the Earth where LIVING THINGS are found

20. THE BIOSPHERE
ECOSYSTEMS

21. THE BIOSPHERE
ECOSYSTEMS
TERRESTRIAL ECOSYSTEMS AQUATIC ECOSYSTEMS

22. THE BIOSPHERE
ECOSYSTEMS
TERRESTRIAL ECOSYSTEMS
MEADOW
FOREST
CITY
AQUATIC ECOSYSTEMS
COAST
POND

23. ECOSYSTEM:
PLANT SPECIES ANIMAL SPECIES

24. KEY CONCEPTS
Environment: is made up of the physical and the biological environment.
-Physical environment: the combination of non-living things.
-Biological environment: the combination of living things.
-Species: group of individuals with similar characteristics that can
reproduce within their group.
-Population: all of the individiuals of the same species living in a
particular place.
-Community: all the populations living in a particular place.
Ecosystem: the combination of the community and the surrounding
physical environment.
Biosphere: the part of the Earth where living things are found.

25. HOW WE ALTER ECOSYSTEMS
DIRECTLY
INDIRECTLY

26. LOGGING
FISHING
HUNTING

27. FROM NATURAL ECOSYSTEMS, SUCH
AS FORESTS
TO ARTIFICIAL ECOSYSTEMS, SUCH AS
FARMLAND AND CITIES.

28. DESERTIFICATION
SOIL
EROSION

29. POLLUTANTS

30. HOW CAN YOU HELP THE
ENVIRONMENT?
It is your responsibility!!

31. ENDANGERED SPECIES AND
EXTINCTION
CAUSES OF
ANIMAL
EXTINCTION