An ecosystem is an ecological system comprising living and non-living elements in an environment. The living elements include plants, animals, and microorganisms, which grow, change, reproduce and respond to their surroundings. The non-living elements of an ecosystem are components like air, water, soil, climate and rocks, which interact with the living organisms. Ecosystems exist in various forms like lakes, ponds, forests and deserts.

1. Ecosystem

2. What is an Ecosystem ??
It is short for “ECOLOGICAL SYSTEM”.
The living element, such as plants and animals
non-living elements of the area, such as
climate, water, soil, rock
Environment

4. Lake
Pond

6. Biotic factors are the living parts of an ecosystem.
Examples are animals, plants and microorganisms.
animals

7. Biotic factors are the living parts of an ecosystem.
Examples are animals, plants and microorganisms.
plants

8. Biotic factors are the living parts of an ecosystem.
Examples are animals, plants and microorganisms.
Microorganism

9. Living things
1. Grow, change, develop and die

10. Living things
2. Reproduce/divide

11. Living things
3. Respond to environmental changes

12. Abiotic factors are the non living parts of an
ecosystem.
Examples are air, water, rock

13. Prepared By: Hannah Cuevas
Mini English Program Teacher
Thailand