1. Interactions in Ecosystems
Topics 2 and 3

2. What are natural resources?
Natural Resources are materials or substances that occur in nature and can be used by people
Examples are minerals and Forests
Are there others? Let’s list them!

3. Types of Resources Renewable Non-Renewable Definition:
Can be replaced or recreated in a lifetime
 Definition:
Can not be replaced or recreated in a life time
Example

4. Resource Sort Brain Pop Sortify Natural Resources 
Brain Pop Sortify Natural Resources

5. Think About It!
The growing human population on earth causes problems for the natural ecosystems. Why are human needs in conflict with the needs of natural ecosystems?

6. I Can…
I can identify mechanisms by which pollutants enter and move through the environment, and can become concentrated in some organisms
I can identify signs of ecological succession (change) in local ecosystems 
I can illustrate how life-supporting environments meet the needs of living things for nutrients, energy sources, moisture, suitable habitat, and exchange of gases 

7. The Carbon Cycle
Carbon is on eelement that is found in every plant and animal
The Carbon cycle is represented in the diagram… what do the arrows mean?

8. The Carbon Cycle What is the starting point in the carbon cycle?
What is the ending point in the carbon cycle?
Describe the Carbon Cycle
(Start at 6 minutes)

9. Now for the Finest Diagram You’ve seen!

10. Stages of the Water Cycle

11. Describe the Steps of the water cycle
Transpiration
Condensation
Precipitation
Evaporation

12. What are the Missing Steps from Before?

13. Describe the Steps of the water cycle
Accumulation
Surface Run Off

14. Think about it!
What is water used for in organisms?

15. Pollution What is Pollution? What is a pollutant?
When does pollution occur?
Carbon dioxide (CO2) is a natural and necessary substance in the atmosphere. Explain how CO2 can become a pollutant?

16. Pollution What is Pollution?
Pollution happens when a substance is added into the environment at a rate that it can’t be repaired.
What is a pollutant?
A substance that causes pollution
Think About it!
Carbon dioxide (CO2) is a natural and necessary substance in the atmosphere. Explain how CO2 can become a pollutant?

17. Pollution in Water An example of water pollution is Acid Rain
Acid rain is formed in the air when carbon dioxide and sulfur dioxide are released from the burning of fossil fuels and mix with water in the atmosphere.
Why does acid rain kill fish?

18. Think about It! https://www.youtube.com/watch?v=v09KnqiYi-c
How do Humans Impact the Environment? What changes did Mr. Burns do that changed the Environment?

20. No Simple Answers https://www.youtube.com/watch?v=R9tQXY2GNxI
Do forest fires benefit humans?
Why would it be helpful to a forest ecosystem to experience a forest fire?

21. No Simple Answers https://www.youtube.com/watch?v=0YQbriSlJZw
How was DDT used? Why was it used?
Why is it no longer used?

22. No Simple Answers - Eagles

23. Think About it!
Do humans play a role in how animals interact in their ecosystems?

24. Game Time!
Get Ready to play a game outside! 

25. Game Example
Draw this picture in your notes!

26. Introduced Species
Introduced Species are species that are not native to an area that have been brought to a new area
Introduced Species are also known as invasive species

27. Biological Controls
Biological controls are natural controls to control introduced or invasive species.
Examples include:
Goats and Invasive Plants
Pheromones and Mountain Pine Beetle
Others?
For Fun!

28. Species in Danger What does it mean if a species is extinct?
 What does it mean if a species is endangered?
 Which basic need is most in danger to cause organisms to be threatened with extinction in Canada?
Let’s talk about this example!