Organization of Life

eco - household ology – study of Ecology – study of the interactions between organisms and the living (biotic) and nonliving (abiotic) components of their environment

Biotic Factors Living components of the environment All things living

Abiotic Factors Physical and chemical aspects of the environment climate, temperature, precipitation, humidity, wind, nutrient availability, soil type, sunlight

Organism Population Community Ecosystem Biosphere

Biosphere Ecosystem Community Population Organism Organ System Organ Tissue Cell

Levels of Organization in Ecology 1. Biosphere refers to the thin volume of Earth and its atmosphere that supports life and abiotic factors

2. Ecosystem all the living and nonliving things in a particular place Ex. pond, lake, forest

3. Community all the interacting organisms living in an area Ex. all the plants, fish, bacteria, algae living in a pond

4. Population all the members of a species in one place at one time Ex. All of the deer that live in the Chickamauga Battlefield in 2010

5. Organism simplest level of organization refers to individuals of a particular species

6. Organ System Two or more organs that work together to carry out related tasks

7. Organ A group of tissues that work together to carry out a similar task

8. Tissue A group of cells that work together to carry out a similar task

9. Cell Basic unit of life