
Ecosystem Dynamics
Presentation
•
Science
•
8th Grade
•
Practice Problem
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Easy
+4
Standards-aligned
Mark Quinn
Used 2+ times
FREE Resource
7 Slides • 5 Questions
1
Open Ended
What's your favorite song right now?
2
Open Ended
How do humans impact ecosystems?
3
Change is happening all around you. Sometimes that change can be sudden, like a strong storm that blows down a tree. Other times, the change is slow, such as a tree growing each day.
Impacts on the environment, whether sudden or slow, cause ecosystems to change and adapt.
We may not notice is, but is it still happening?
Does a tree make a sound when it falls if no one is around?
Changing Ecosystems
4
​https://www.youtube.com/watch?v=cMMjX4GUTiI
5
Ecosystems are dynamic, meaning they are characterized by constant change.
A forest may not seem to change much over time, but when you look more closely, you will see that the populations within that forest ecosystem are constantly changing. A flood could destroy habitats and lead to the decline of animal populations.
A wildfire could kill the old growth tree of an area.
Changing
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8
One change in an ecosystem could result in a variety of species being affected.
Let's look at the image to the right.
How are the organisms in this image connected?
Ecosystem Connections
9
Open Ended
What other connections can you think of between two organisms? Does not have to be in PA.
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11
Draw
Circle the organisms that would be impacted with the mouse population declining.
12
Open Ended
What concept of our ecosystem topic was confusing?
What's your favorite song right now?
Show answer
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