1. Interactions

2. Adapting to the Environment
• A. Every organism has adaptations that are
well suited to its living conditions

3. Adapting to the Environment
• B. Niche= An organism’s role in it’s habitat
• A niche would include how and when it
reproduces, how it moves, how it gets it’s
food, and more

4. Three types of Interactions
• Competition
• Predation
• Symbiosis

5. Competition
• Struggle between organism over limited
resources
• If two organisms occupy the same niche, they
will compete and only one will survive.

6. Predation
• One organism hunts and kills another for food
• Predator- lion
• Prey- zebra
• Predators have adaptations the help them
catch and kill their prey. The lion’s sharp
claws and teeth.

7. Predation
• Some predators have adaptations that enable
them to hunt at night.
• Fox Bat
• Owl

8. Predation
• Prey also have adaptations to avoid being
caught.
• Camouflage
• Warning coloring
• Protective covering
• Mimicry
• False coloring

9. Symbiosis
• Close relationship between two organisms
where at least one benefits.
• Mutualism
• Commensalism
• Parasitism

10. Mutualism
• Both benefit
• Example: Bats (get food)and cactus (new
plants)

11. Commensalism
• One benefits & the other is not helped or
harmed
• Example: cactus and hawks (get a home)

12. Parasitism
• One benefits One harmed
• Example: tick (gets food) dog (harmed)
Tick is a parasite Dog is the host