ECOLOGY 2.5

1. ECOLOGY 2.5 12 bio 2010

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

3. 12 bio 2010 UV Light Study

4. 12 bio 2010 UV Light Study

5. 12 bio 2010 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

6. 12 bio 2010 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

7. 12 bio 2010 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 To Do: BZ pg XXXX

8. 12 bio 2010 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 To Do: BZ pg XXXX

9. 12 bio 2010 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

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