1. What is Ecology?

2. What is Ecology??
The study of interactions that take place between organisms and their environment.
It explains how living organisms affect each other and the world they live in.

3. Levels of Organization

4. What are the Simplest Levels?
Atom
Molecule
Organelle
Cell
Tissue
Organ
System

5. Levels of Organization
Ecologists have organized the interactions an organism takes part in into different levels according to complexity.
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6. 1st Level of Organization
Organism: An individual thing that is made of cells, uses energy, reproduces, responds, grows, and develops

7. 2nd Level of Organization
Population: A group of organisms, all of the same species, which interbreed and live in the same place at the same time.

8. 3rd Level of Organization
Biological Community: All the populations of different species that live in the same place at the same time.

9. 4th Level of Organization
Ecosystem:
All the biotic (communites) and abiotic factors that interact in a given area
(terrestrial or aquatic)

10. The Nonliving Environment
Abiotic factors- the nonliving parts of an organism’s environment.
Examples include air currents, temperature, moisture, light, and soil.
Abiotic factors affect an organism’s life.

11. The Living Environment
Biotic factors- all the living organisms that inhabit an environment.
All organisms depend on others directly or indirectly for food, shelter, reproduction, or protection.
The factors song

12. Abiotic or Biotic?
Biotic

13. Abiotic or Biotic?
Abiotic

14. Abiotic or Biotic?
Abiotic

15. 5th Level of Organization
Biosphere: The portion of Earth that supports life.

16. The Biosphere
Life is found in air, on land, and in fresh and salt water.
The BIOSPHERE is the portion of Earth that supports living things.

17. What level of organization?
Organism

18. What level of Organization?
Ecosystem

19. What level of Organization?
Population

20. What level of organization?
Community

21. copyright cmassengale
On your paper, list an example of an organism, population, community and ecosystem seen here – BE SPECIFIC!
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22. copyright cmassengale
On your paper, list an example of an organism, population, community and ecosystem seen here – BE SPECIFIC!
copyright cmassengale