The document introduces the levels of biological organization from the broadest to the most specific. It discusses the biosphere, ecosystems, communities, populations, organisms, organ systems, organs, tissues, cells, organelles, molecules, and atoms. It also briefly introduces ecological pyramids including pyramids of numbers, energy, and biomass. Examples are provided for each level of organization.

1. Introduction to BiologyEcology, Physiology, and Chemistry

2. I. Levels of Biological OrganizationA. Biosphere - All of the environments/ecosystems on earth that support life. Example: The earth.

3. I. Levels of Biological OrganizationB. Ecosystem – Different living organisms and the non living things that they interact with. Example: The Persian Gulf.

4. I. Levels of Biological OrganizationC. Community – Only the living organisms from the ecosystem. Different groups populations that interact with one another. Example: All of the coral and fish of the Persian Gulf.

5. I. Levels of Biological OrganizationD. Population – A group of all of the same species. Example: A School of Deadly stripped eel fish!

6. I. Levels of Biological OrganizationE. Organism – the individual living thing. Example: The second most poisonous vertebrate in the World...

7. I. Levels of Biological OrganizationF. Organ System – A group of organs that work together in performing specific functions. Example: The nervous system.

8. I. Levels of Biological OrganizationG. Organs – A structure consisting of several tissues adapted as a group to perform a specific function. Example: The lungs

9. I. Levels of Biological OrganizationH. Tissues – a collection of cells, not necessarily identical, but from the same origin, that together carry out a specific function. Example: Connective Tissue.

10. I. Levels of Biological OrganizationI. Cell – The smallest, most basic unit of Life. Example: Nerve Cell

11. I. Levels of Biological OrganizationJ. Organelle – Membrane bound structures that perform a specific function in a cell. Example: Mitochondria

12. I. Levels of Biological OrganizationK. Molecule – A cluster of atoms held together by chemical bonds. Example: H2O

13. I. Levels of Biological OrganizationL. Atom – the smallest, most basic, indivisible unit of matter. Example: Hydrogen atom

14. Ecological Pyramids Pyramid of NumbersPyramid of EnergyPyramid of Biomass

15. Pyramid of Numbers

16. Perch, Pike, Ospreyhttp://www.youtube.com/watch?v=Uiu8wIgdsPkhttp://www.youtube.com/watch?v=5CEtxcOQwDY

17. Food chains and Webshttps://www.etap.org/demo/biology_files/lesson6/instruction6tutor.html