1. Relationships in Ecosystems
SPI & SPI
Class Hook: Everything That Eats is Connected video

2. I can DESCRIBE the different types of nutritional relationships that exist among organisms.
I can distinguish among symbiotic, commensal, and parasitic relationships.

3. Vocabulary Commensalism Community Ecosystem Food Chain Food Web
This week you will add the given words to your daily studying. You may still access the Quizlet.
Commensalism
Community
Ecosystem
Food Chain
Food Web
Mutualism
Parasitism
Population
Predator
Prey
Symbiosis

4. What is in an ecosystem?
________________ are the living things in an environment.
Examples:
________________ are the nonliving things in an environment.
An __________ is all the living (biotic) and nonliving (abiotic) things in an environment.
Organisms in an ecosystem can be organized into different ___________.
A ________ is _________________ of a single species in an area at a given time.
* All of the coyotes in the forest or all of the southern red oak trees in the forest
Different populations then make up a _________.
A community is _____________________ in an ecosystem.
*The forest community may include:

5. Yellow/Green Partners
Describe the populations that can be found in this ecosystem.
Identify 3 abiotic factors and 3 biotic factors.

6. Think About It
FORMULATE a diorama of an ecosystem for the animal you are given.
You will record the abiotic factors, biotic factors, organisms, and populations that can be found in your ecosystem.
The recorded information can be glued to the back of your shoe box.
Usually, we consider soil an abiotic factor in an ecosystem. Why might soil also be considered a biotic factor?

7. How are food chains alike?
A ____________ is the path that energy and nutrients follow in an ecosystem.
The _____ is always the start of a food chain.
Energy moves from the Sun to _______________(organisms that use sunlight to make their own food).
Producers are always the __________ of every food chain.
Energy moves from producers (plants) to ______________.
____________ are animals that eat plants or other animals (must consume or eat their food).
_________________ is the first consumer in the food chain.
_________________is the second consumer in the food chain.

9. What are the types of consumers?
An ______________ eats only producers.
Examples:
A _____________ eats only other animals.
An _____________ eats both plants and animals.
________________ break down dead or decaying plant and animal material.
Examples:
_______________ eat leftover bodies after they have started to rot.

11. Yellow/Green Partners
FORMULATE a water food chain.
FORMULATE a land food chain.
Share & Evaluate each other’s work.

12. Think About It
What kind of consumer would be better able to survive in an ecosystem if some of the carnivores died from disease?
What is the fewest number of links a food chain could have? The greatest?

13. What are food webs made of?
A __________ is the network of overlapping food chains.
___________ is an animal that is eaten by another animal.
A ___________ is an animal that hunts other animals.
In a food web, the arrows show the direction _________ is moving.
Arrows point from the ________ to the ___________.
Step into a life-sized Food Web

15. What are symbiotic relationships?
Symbiosis is a relationship between 2 or more organisms that lasts over time.
A symbiotic relationship that benefits both organisms is called mutualism.
*Each organism gain from the relationship.
A symbiotic relationship benefits ONE organism WITHOUT harming the other is called commensalism.
SHOW BEFORE DISCUSS-PRESENT ?

16. What are parasites?
Some partnerships are harmful for individuals in the relationship.
Parasitism is a symbiotic relationship where one organism benefits and the other is harmed.
A parasite lives in or on a host organism and benefits from the relationship.

17. Symbiosis Cha-Cha Slide