1. ECOLOGY 2.5 12 bio 2010

2. Ecology The study of organism’s interrelationships with the physical environment and other organisms Achievement Standard: Describe concepts and processes relating to ecology 12 bio 2010

3. UV Light Study 12 bio 2010

4. UV Light Study 12 bio 2010

5. Abiotic and Biotic Factors Ecosystem: communities and their physical environment (living + non living) Made up of two things: 1. Abiotic factors - non-living 2. Biotic factors – living Video http://videos.howstuffworks.com/discovery/30707- assignment-discovery-abiotic-and-biotic-factors- video.htm 12 bio 2010

6. Abiotic Factors Physical/non-living characteristics of the environment  Light – intensity, direction, day length  Water – salinity, humidity, pH  Wind – speed, direction, exposure  Soil type – pH, nutrient levels  Pressure - altitude effects, oxygen levels 12 bio 2010

7. Biotic Factors Living factors Intraspecific interactions occur between organisms of the same species (mates, rivals, competitors) Interspecific interactions occur between organisms of different species (food, predators, parasites, competitors) Extra Readings: pg 74-75 Bayley 12 bio 2010 To Do: BZ pg XXXX

8. Biotic Factors Living factors Intraspecific interactions occur between organisms of the same species (mates, rivals, competitors) Interspecific interactions occur between organisms of different species (food, predators, parasites, competitors) Extra Readings: pg 74-75 Bayley 12 bio 2010 To Do: BZ pg XXXX

9. Modes of Life An organisms relationship to other organisms in its environment depends upon its mode of life in the community TO DO: Use the definitions and words to fill out the crossword 12 bio 2010

10. Quiz Answer A for abiotic or B for biotic NEXT TOPIC: HABITATHABITAT 12 bio 2010