Biomagnification and Bioaccumulation

Presentation

•

Science

•

9th - 12th Grade

•

Hard

Joseph Anderson

FREE Resource

10 Slides • 6 Questions

Bioaccumulation vs. Biomagnification

American Experience | Rachel Carson & Silent Spring | Season 22 | Episode 5 | PBS

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Open Ended

What did you notice in the video? Record some observations.

Type response here

Biomagnification

AKA bioamplification-

increase of toxic chemicals such as pesticides as it is passed upward and maximized to the top predator in the food chain

Bioaccumulation

Increase in the concentration of a chemical in an organism over time

Open Ended

Explain the different between bioaccumulation and biomagnification

Type response here

Ex: Bioaccumulation

Land:

Flint water crisis & build up in babies/children with lead

Sea:

Plastic pollution- whales seen washed ashore?

Amphibians fall into both categories!

EX: Biomagnification

Sea:

Tuna with mercury

Sharks

Swordfish

Land:

CA Condor drastically reduced because of lead - harming shells of eggs

- peregrine falcons

-bald eagles

Multiple Choice

Which organism in the food web shown would

contain the lowest concentration of chemical pollutants?

producers

primary consumers

secondary consumers

tertiary consumers

Multiple Choice

The phenomenon by which toxins concentrate in the organisms at higher trophic levels within an ecosystem is known as...

Biotoxicity

Biomagnification

Eutrophication

Predation

Multiple Choice

Consider the following food chain:

Algae > Mayfly > Minnow > Trout

In a polluted ecosystem, which organism would likely have the HIGHEST level of toxic chemicals in its body?

Algae

Mayfly

Minnow

Trout

Multiple Choice

_____________ is the increase in concentration of a pollutant in a food chain

Bioaccumulation

Biomagnification

Bioaccumulation vs. Biomagnification

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