1. Relationships in an Ecosystem

2. Predator-Prey Interaction in which one species consumes another.
Ex. Lion eats a zebra
Lion hunting zebra

3. Symbiosis
An interaction between two or more organisms living in close physical association.

4. Mutualism
A symbiotic relationship that each organisms benefits from. “mutual benefit”
Ex. Bee pollinates a flower in exchange for nectar

5. Mutualism Clown fish (Nemo) and the Sea Anemone
Both get protection from one another

6. Mutualism Humans and certain bacteria
Bacteria get food from us, and help us digest

7. Mutualism Certain bacteria and Plants
Plants get nitrogen from bacteria
Bacteria get food from plants

8. Mutualism Oxpecker and Rhino
The Oxpecker gets food and the Rhino gets cleaned

9. Commensalism
Symbiotic relationship where one organisms benefits and the other is not affected

10. Commensalism Whale shark and remora (type of fish)
Remora gets “left-overs” and the whale shark is unaffected
Whale shark with attached remora

11. Commensalism Eyelash mites
Mites get feed on the oils in our skin, we are unharmed

12. Commensalism Cattle Egrets and Cows
Egrets eat insects that the cows stir up

13. Parasitism
Symbiotic relationship where organism benefits and the other is harmed

14. Parasitism Animals and Ticks

15. Parasitism Tapeworm Lives inside animals

16. Parasitism
Botfly
Larva (maggots) live in and eats the skin of animals

17. Parasitism Fish and the tongue eating louse Tongue parasite

18. Competition
Relationship between organisms in which they are using the same resources (food, water, territory, mates, etc.)

19. Intraspecific Competition
Competitions between organisms of the same species

20. Intraspecific Competition
Male snakes competing for mates
Snakes wrestling

21. Interspecific Competition
Competition between organisms of different species

22. Interspecific Competition
Hyena and Lions in Africa