1. Organism Distribution Noadswood Science, 2011

2. Organism Distribution  To understand how changes in the environment affect the distribution of organisms Tuesday, May 12, 2015

3. Environmental Change  Animals and plants are exposed to environmental change – these changes may be caused by living factors, such as a change in a predator, a food source or a competitor  Environmental changes may also be caused by non-living factors, such as a change in temperature or rainfall

4. Predators & Prey  If the prey population grows, predator numbers will respond to the increased food supply by increasing as well  Growing predator numbers will eventually reduce the food supply to the point where it can no longer sustain the predator population, and the number of predators will go down…

5. Practical – Choice Chamber  Investigate the behaviour of woodlice using a choice chamber – setup the chamber with 4 different environments: -  Dark and damp  Dark and dry  Light and damp  Light and dry  Leave the woodlice on their own for a while, and then the number of animals in each quarter…  * Remember these are living organisms – treat them appropriately

6. Practical – Choice Chamber  Describe and explain your findings…  Woodlice prefer dark, damp conditions – this is the type of habitat they live in. Should this change in their environment they will seek a better location