Biomagnification 11/5/2020

Biomagnification 11/5/2020

Learning Objectives

SW learn how biomagnification occurs

SW learn how biomagnification affects both humans and other ogranisms

Multiple Choice

The process when concentrations of a harmful substance increases in organisms at higher trophic levels in a food chain or food web.

• Biomagnification

• Predation

• Extinction

• Accumulation

Multiple Choice

Which organism in this diagram has the highest DDT concentration?

• Zooplanktons

• small fish

• large fish

• Fish-eating birds

Multiple Choice

What does accumulate mean?

• to increase

• to chase

• to destroy

• to reproduce

Multiple Choice

What was DDT used for?

• It's a pesticide used to kill weeds.

• It's an insecticide used to kill malaria.

• It's an insecticide used to control insect-borne diseases.

• It's a pesticide used to kill eagles.

Multiple Choice

One of the first widely used pesticides produced and was widely used because it was cheap, remained active for a long time, and killed many insect considered pests.

• Baygon
• Pyrethroids
• Raid
• DDT

Multiple Choice

Identify the process shown in this diagram.

• Extinction

• Toxin Accumulation

• Pollution

• Biomagnification

Multiple Choice

Which organism in the food web would

contain the highest concentration of chemical pollutants?

• producers

• primary consumers

• secondary consumers

• tertiary consumers

Multiple Choice

According to the video we watched, which of the following is NOT a defining characteristic of most farmed fish?

• Lower levels of fat content compared to wild fish

• Higher levels of toxins compared to wild fish

• Raised in captivity

• Treated with antibiotics

Lesson Review

Today we learned how biomagnification occurs and how that impacts organisms - including humans