Amoeba Sisters 3 pack

​https://www.youtube.com/watch?v=rNjPI84sApQ

https://www.youtube.com/watch?v=uqEUzgVAF6g​

• This happens after an ecological disturbance (forest fire, flood, etc.)

• Increases biodiversity​

Secondary succession

​Pioneer species-first to colonize an area. They make soil.

Competition-new species entering an area with good soil. These two groups compete for resources.​

​Primary succession

All ecological succession takes a very long time!

​Biomagnification

Video​

https://www.youtube.com/watch?v=TZk6vcmLcKw​

​Think of an iceberg

​Perceived affect is above the water.

​

Actual affect is below the water.

Actual affect is much bigger and

maybe unseen​ or not understood.

Example: DDT is so much more dangerous and damaging than scientist realized.

​-the process by which a compound (such as a pollutant or pesticide) increases its concentration in the tissues of organisms as it travels up the food chain​

Example: Eagle that eats lots of mice and lizards that have eaten lots of bugs that have eaten lots of a toxic chemical.​

​The eagle will have the most toxins.

Three kinds

​

• Primary consumer-insects

• Secondary consumer-mice, rats and lizards

• Tertiary consumer-eagle

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