1. SUSTAINABLE ECOSYSTEMS

2. Before We Start Hand in: Hand Back: Quadrat Lab
Ecological Pyramids Worksheet
Ions Worksheet/Signed Tests!
Hand Back:
Quadrats (for complete groups!)

3. Human Impacts and Populations

4. What are five factors that humans affect the environment?

5. Impact #1: Habitat Change

6. It affects the top predators the most.
Impact #1: Habitat Loss
Habitat fragmentation is a kind of habitat change.
It affects the top predators the most.

7. Impact #2: Overexploitation
Overexploitation results in the extinction of one species, collapsing the food chain.

8. Impact #3: Climate Change
Climate change is when the long-term conditions in an area change (ex. it gets hotter). The polar ice caps are melting, causing polar bears to drown.

9. Impact #3: Climate Change
This food chain has totally collapsed due to the effects of climate change on the ice caps.

10. Impact #4: Pollution
Pollution is special because it usually kills the top predator first, through biomagnification. Biomagnification is the accumulation of poisons in the higher trophic levels.
1 ppm/blade
30 ppm/mouse
120 ppm/snake
360 ppm/eagle

11. Impact #5: Invasive Species
Invasive species change populations by outcompeting local native species.
What is
Competition?
We are left with a totally different food web and two animals are extinct.

12. Instructions are on the board.
Human Impacts Jigsaw
Instructions are on the board.

13. Meet in your groups (on the board)
Human Impacts Jigsaw
Meet in your groups (on the board)
at the back tables.
Use the infographics to fill out the sheet you have been given. You will be the
“expert” on this topic.
Next day we will do the second half of the jigsaw and you will teach your group mates.