UNIT 3

1. Ecosystems
Unit 3

2. An ecosystem
• Includes all of the living things and non
living things in a particular place.

3. An ecosystem also includes
• The relationships that exist between those
things.

4. A habitat is the place where
particular living things lives

5. Each animal and planta depends
on its habitat for food

6. An ecosystem is made up of
• The biotope and the biocenosis

7. The biotope
• It´s the physical environment. It includes
all of the non living things in a ecosystem.
• Soil, light, temperature…

8. The biocenosis
• Includes all the living things in an
ecosystem, such as plants, animals and
other organisms.

11. In a ecosytem there are:
• Population and communities

12. Population is
• A group of organism that live togheter and
belong to the same species.

13. Comunnity
• It´s a collection of different populations
that live together in one place.

14. In ecosystems there are two types
of relationships
• intraspecific: exists between members of
the same species.
• Extraspecific between members of
different species.

16. Trophic relationships

20. Pond ecosystems

21. Woodland ecosystems

22. Coast ecosystems

23. BIOSPHERE IS
• ALL THE ECOSYSTEMS ON THE
EARTH.

24. HABITAT

25. BIOME

27. ECOSYSTEMS CHANGE OVER
TIME

29. POLLUTION

30. OVERFISHING

31. FOREST FIRES

32. DEFORESTATION