APES 8.8, 8.6 Bioaccumulation, Biomag. & Thermal Pollution

When you consume an organism, you only receive 10% of the energy, but how much of the toxins do you receive?

• All of the toxins

• 10% toxins

• 1% toxins

• None of the toxins

Pesticides and herbicides eventually show up in higher-level consumers (i.e. as you go up the food chain) due to

• biomagnification

• climate change

• habitat destruction

• bioaccumulation

Toxin concentrations _____________ as you go up the food chain.

• do not change

• increase

• decrease

Which consumer is the most affected by toxins like mercury?

• Primary Consumer

• Secondary Consumer

• Apex (top) Predator

• Producers

"Only humans make waste nature cannot digest." What did the captain mean by this?

• Nature cannot recycle or reuse much of the trash humans produce.

• Nature is great at recycling or reusing most of the trash humans produce.

• Humans are poor at recycling.

• Humans are poor at disposing of trash.

What are examples of toxins? (choose all that apply)

• water

• salt

• pesticides

• mercury

• insecticides

In which organism would biomagnification be the most concentrated? (Remember the lab: Rabbits eat the grass, the snake eats the rabbit, the hawk eats the snake--the hawk is the apex predator)

• grass

• rabbit

• snake

• hawk

In what year were the most toxins present in smallmouth bass?

• 2000

• 2002

• 2004

• 2005

Which organism in the food web shown to the right would

contain the lowest concentration of chemical pollutants?

• producers

• primary consumers

• secondary consumers

• tertiary consumers

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

• Biotoxicity

• Biomagnification

• Eutrophication

• Predation