1. Ecology: an introduction

2. The study of the interactions that take place among organisms and their environment

3. Environment
An environment has two parts
Living Parts
Non-Living Parts

4. Living Things
Living things in an environment are called Biotic Factors. The pre-fix “bio-” means living.
Plants
Animals
Single-celled organisms
Fungi
Insects

5. Non-living things
Non-living things in an environment are called Abiotic Factors.
Water
Air
Soil
Rocks
Sunlight/Heat

6. How an Environment is Organized

7. Organism
An organism is a living thing (Biotic)

8. Population
All the organisms in an ecosystem that belong to the same species. (Biotic)

10. Community
All the populations of different species that live and interact in an area.(biotic)

11. Ecosystem
All the organisms living in an area and the nonliving features of their environment
Biotic – living
Abiotic – nonliving

13. Biosphere The part of Earth that supports life
Top portion of Earth's crust (lithosphere)
All the waters that cover Earth's surface (hydrosphere)
Atmosphere that surrounds Earth

14. Earth’s Crust / Lithosphere

15. Earth’s Waters / Hydrosphere

16. Air / Atmosphere