1. Review On your whiteboard:
Redraw the diagram to show the potential effect on the realized niches of Species 1, 2, and 3 if a predator of Species 3 is introduced into the habitat.

2. What is Predation?
The process by which a predator hunts, kills, and consumes prey
Video Clip

3. Population Cycles
Predation causes cycles in predatory and prey population sizes

5. What are some defenses prey organisms have evolved over time?
Brainstorm!
What are some defenses prey organisms have evolved over time?
Work with your partner
Write your ideas on the whiteboard

6. MIMICRY
Mimicry is the case in which one species looks similar to another species.
1. Batesian mimicry in which one non-poisonous species mimics another poisonous species.
2. Mullerian mimicry occurs when two poisonous species evolve to look like each other.

7. MULLERIAN
BATESIAN
Viceroy
Monarch

8. Camouflage
Blend in to hide from predators….or to BE a predator!

10. What is Herbivory?
An organism feeding on a plant

11. What are some defenses plants have evolved over time?
Brainstorm!
What are some defenses plants have evolved over time?
Work with your partner
Write your ideas on the whiteboard

12. Thorns, Spikes, or Hair

13. Chemicals
Video Clip

14. summary SPECIES A SPECIES B Predation + - One benefits & other harmed
Herbivory
One benefits & other harmed