1. Bellwork Create a food chain that ends with you.
Identify the energy role of each organism in this food web at right (producer, consumer, decomposer)
for the consumers specify whether they are first, second, or third level.
Which level of the food web contains the greatest amount of energy?

2. Interactions in communities

3. Bellwork Name a producer Name a 2nd level consumer
Name a 3rd level consumer
What do the arrows represent
Name an omnivore
Name an herbavore
Name a carnivore

4. Interactions in Communities
EQ: How do organisms interact in an ecosystem?
Obj: describe the types of interactions and their effect on communities
SC.7.L.17.2

5. What are some ways that organisms interact?
Predation
Symbiosis
Competition

6. What is Predation?
Predation –interaction where one organism kills and eats another
Predator – the organism that does the killing
Prey – The organism that is killed

7. Predators and Prey have adaptations to help them survive:

11. Prey adaptations

16. Predator/Prey Adaptations
Predator adaptations
Claws and Teeth
Stinging tentacles
Strong senses
speed
Prey adaptations:
Camouflage
Protective coverings
Mimicry
False coloring

17. How are predator and prey populations connected?
If one population grows or shrinks, the other is affected
Ex:
More rabbits 
more foxes 
foxes need more food 
eat more rabbits 
rabbit population declines
food shortage for foxes 
fox population shrinks  more rabbits

18. Complete the Venn Diagram to compare and contrast Predators and Prey

19. What is symbiosis?
Symbiosis – A close long-term relationship between different species in a community
Organisms can benefit, be harmed or be unaffected.

20. Mutalism Both organisms benefit
A bee drinks nectar and pollinates the flower

22. Commensalism One organism Benefits, the other is unaffected
EX: Orchids on trees – better sunlight for orchid, no effect on tree

24. Parasitism One organism benefits One is harmed
Parasite – the organism that benefits
Host – harmed
Ex: tapeworm gets food, dog gets weaker

27. What is competition?
Competition occurs when organisms fight for the same limited resources such as food, water, space, light, oxygen, and minerals.
In same species:
Groups of lions compete with each other for living space
Between different species
Lions compete with leopard and cheetahs for food (zebras), water

28. Exit: Interaction in Community
List the 3 main kinds of species interaction
What affect might an increase in the lion population have on competition in a community?
Compare the 3 types of symbiosis
You have bacteria living in your intestines that help you digest food. Classify this relationship

29. Cause and effect – examples of competition in a community
A population of lions grows too large to share their current territory
Several male hyenas compete to mate with the females in their area

30. Bellwork –Thurs.
A fox eats a rabbit that ate a carrot. The fox dies and decays. Create a food chain that shows the transfer of energy. Identify the energy roles of each organism
List the 3 types of symbiosis. Describe how the 2 organisms in each are affected: (benefited, harmed, neither)
3. A population of lions grows too large to share their current territory, what might happen? (use competition, habitat, limiting factor, resources, prey in your answer)

31. EQ: How do organisms interact in an ecosystem?
Obj: I can describe the types of symbiosis because I can identify examples

32. Types of symbiosis As you watch the short video, look for examples of: Parasitism, Mutualism, Commensalism

34. Rotate jobs with each new task card.
Symbiosis Stations:
Each group will receive a task card with an example of one of an example of an interaction between organisms in an ecosystem
For each card, person number….
Read the example to the group
Name the organism(s) that benefits
Name any organism that is helped/harmed/neither
identify the type of symbiosis
describe the relationship (if no 5 all do this together)
Rotate jobs with each new task card.

35. exit: identify the type of symbiosis
Tiny mites live in human eyelashes and feed on dead skin
Bacteria live in human intestines where they get food and help humans break down their food
Ants live on a tree which gives them food and shelter. They deter grazing animals from eating the tree by biting them.
A tick attaches itself to a white tailed deer
Barnacles grow on the shell of a scallop. They get a place to live, the scallop is unharmed.

36. Bellwork:
A tiger shark lurks beneath the surface of the clear blue water looking for shadows of young albatross floating above it. The shark sees an albatross chick and silently swims closer.
The shark bursts through the water and seizes the albatross with one snap of its powerful jaw
Describe this interaction: use the words predator, prey, population, increase, decrease, competition

37. Bellwork – Fri

38. Predator Prey lab:

39. Grudge Match
Object: remove points from other teams. The team with the most points at the end of the game wins
Remove 2 X’s from other team(s) for each correct answer
Shoot from the 2 or 3 point line to remove 2 or 3 extra points
If you go out, you may get your team back in by answering a question correctly and shooting to get more points.

40. Bellwork Name the producers in this food web
Name the 1st level consumers
Name the 2nd level consumers
What other 2 categories are missing from this food web
If you are counting all of the gray wolves in an area what level of ecological organization are you studying?