1. 2.2 How Species Interact With Each Other
Unit 2: Living Things in Ecosystems
2.2 How Species Interact With Each Other
2- Living Things in Ecosystems

2. There are 5 Major Species Interactions
Predation:
2- Living Things in Ecosystems

3. There are 5 Major Species Interactions
Predation:
One organism kills another for food
2- Living Things in Ecosystems

4. There are 5 Major Species Interactions
Predation:
One organism kills another for food
Competition:
2- Living Things in Ecosystems

5. There are 5 Major Species Interactions
Predation:
One organism kills another for food
Competition:
Two species compete for limited resources
2- Living Things in Ecosystems

6. There are 5 Major Species Interactions
Predation:
One organism kills another for food
Competition:
Two species compete for limited resources
Parasitism:
2- Living Things in Ecosystems

7. There are 5 Major Species Interactions
Predation:
One organism kills another for food
Competition:
Two species compete for limited resources
Parasitism:
Organisms that live in or on a species for food without immediately killing it
2- Living Things in Ecosystems

8. There are 5 Major Species Interactions
Predation:
One organism kills another for food
Competition:
Two species compete for limited resources
Parasitism:
Organisms that live in or on a species for food without immediately killing it
Mutualism:
2- Living Things in Ecosystems

9. There are 5 Major Species Interactions
Predation:
One organism kills another for food
Competition:
Two species compete for limited resources
Parasitism:
Organisms that live in or on a species for food without immediately killing it
Mutualism:
Two species help one another
2- Living Things in Ecosystems

10. There are 5 Major Species Interactions
Predation:
One organism kills another for food
Competition:
Two species compete for limited resources
Parasitism:
Organisms that live in or on a species for food without immediately killing it
Mutualism:
Two species help one another
Commensalism:
2- Living Things in Ecosystems

11. There are 5 Major Species Interactions
Predation:
One organism kills another for food
Competition:
Two species compete for limited resources
Parasitism:
Organisms that live in or on a species for food without immediately killing it
Mutualism:
Two species help one another
Commensalism:
One species benefits, the other is neither helped or harmed
2- Living Things in Ecosystems

12. 2- Living Things in Ecosystems
Predation
One organism hunts and eats another.
Chameleon eating a grasshopper.
Chameleon uses its specially adapted tongue to catch its food.
2- Living Things in Ecosystems

13. 2- Living Things in Ecosystems
Predator
2- Living Things in Ecosystems

14. 2- Living Things in Ecosystems
Predator
The species that feeds on another species are called predators.
2- Living Things in Ecosystems

15. 2- Living Things in Ecosystems
Predator
The species that feeds on another species are called predators.
Predators find food sources in different ways.
2- Living Things in Ecosystems

16. 2- Living Things in Ecosystems
Predator
The species that feeds on another species are called predators.
Predators find food sources in different ways.
Lions hunt in packs
2- Living Things in Ecosystems

17. 2- Living Things in Ecosystems
Predator
The species that feeds on another species are called predators.
Predators find food sources in different ways.
Lions hunt in packs
Lionesses hunt
2- Living Things in Ecosystems

18. 2- Living Things in Ecosystems
Prey
2- Living Things in Ecosystems

19. 2- Living Things in Ecosystems
Prey
Prey are the species that are hunted and eaten.
2- Living Things in Ecosystems

20. 2- Living Things in Ecosystems
Prey
Prey are the species that are hunted and eaten.
Prey species benefit from predation as old and sick are culled from the herd.
2- Living Things in Ecosystems

21. 2- Living Things in Ecosystems
Prey
Prey are the species that are hunted and eaten.
Prey species benefit from predation as old and sick are culled from the herd.
Cougars hunt individually
2- Living Things in Ecosystems

22. 2- Living Things in Ecosystems
Prey
Prey are the species that are hunted and eaten.
Prey species benefit from predation as old and sick are culled from the herd.
Cougars hunt individually
Cougar killing an elk
2- Living Things in Ecosystems

23. 2- Living Things in Ecosystems
Competition
2- Living Things in Ecosystems

24. 2- Living Things in Ecosystems
Competition
No two species can occupy the same environmental niche.
2- Living Things in Ecosystems

25. 2- Living Things in Ecosystems
Competition
No two species can occupy the same environmental niche.
Hyenas and lions often fight for the same food sources
2- Living Things in Ecosystems

26. 2- Living Things in Ecosystems
Competition
Some species can compete without even seeing each other.
2- Living Things in Ecosystems

27. 2- Living Things in Ecosystems
Competition
Some species can compete without even seeing each other.
Niches may be different but food sources are the same.
2- Living Things in Ecosystems

28. 2- Living Things in Ecosystems
Competition
Some species can compete without even seeing each other.
Niches may be different but food sources are the same.
Mongoose hunt during the day
2- Living Things in Ecosystems

29. 2- Living Things in Ecosystems
Competition
Some species can compete without even seeing each other.
Niches may be different but food sources are the same.
Mongoose hunt during the day
Rats hunt at night
2- Living Things in Ecosystems

30. 2- Living Things in Ecosystems
Competition
Some species can compete without even seeing each other.
Niches may be different but food sources are the same.
Mongoose hunt during the day
Rats hunt at night
2- Living Things in Ecosystems

31. 2- Living Things in Ecosystems
Parasitism
Parasites live off of the host and feeds on it but does not immediately kill it.
2- Living Things in Ecosystems

32. 2- Living Things in Ecosystems
Parasitism
Parasites live off of the host and feeds on it but does not immediately kill it.
Dog ticks attach to the animal and feed off of its blood
2- Living Things in Ecosystems

33. 2- Living Things in Ecosystems
Parasitism
Parasites live off of the host and feeds on it but does not immediately kill it.
Dog ticks attach to the animal and feed off of its blood
2- Living Things in Ecosystems

34. 2- Living Things in Ecosystems
Parasites
The one effected is called the host.
2- Living Things in Ecosystems

35. 2- Living Things in Ecosystems
Parasites
The one effected is called the host.
2- Living Things in Ecosystems

36. 2- Living Things in Ecosystems
Parasites
The one effected is called the host.
Acanthamoeba is removed by harsh treatments but do not kill the host, it may cause blindness
2- Living Things in Ecosystems

37. 2- Living Things in Ecosystems
Mutualism
Mutualism is the cooperative relationship between two species.
2- Living Things in Ecosystems

38. 2- Living Things in Ecosystems
Mutualism
Mutualism is the cooperative relationship between two species.
2- Living Things in Ecosystems

39. 2- Living Things in Ecosystems
Mutualism
Mutualism is the cooperative relationship between two species.
Cowbirds eat the insects off of the bison, both benefit
2- Living Things in Ecosystems

40. 2- Living Things in Ecosystems
Cowbirds are feeding on ticks and other insects on the bison.
2- Living Things in Ecosystems

41. 2- Living Things in Ecosystems
Commensalism
2- Living Things in Ecosystems

42. 2- Living Things in Ecosystems
Commensalism
One species is helped but the other species is neither helped nor harmed.
2- Living Things in Ecosystems

43. 2- Living Things in Ecosystems
Commensalism
One species is helped but the other species is neither helped nor harmed.
Remoras are fish with a suction feature on its head to attach to sharks or other large fish.
2- Living Things in Ecosystems

44. 2- Living Things in Ecosystems

45. 2- Living Things in Ecosystems
Remoras feed on debris coming out of the shark’s mouth
as it feeds.
2- Living Things in Ecosystems