Bioaccumulation/ biomagnification /composting_2025

The increase in the amount of persistent organic chemicals (POCs) within an organism over time

• Biomagnefication

• 10% Rule

• Energy Pyramid

• Bioaccumulation

The phenomenon by which contaninants increase in concentrate at higher trophic levels within an ecosystem is known as...

• Biotoxicity

• Biomagnification

• Eutrophication

• Predation

Which organism in the food web would contain the highest concentration of chemical pollutants?

• producers

• primary consumers

• secondary consumers

• tertiary consumers

Tags

NGSS.MS-LS2-3

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

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What are the potential consequences of bioaccumulation in aquatic food chains?

• Decreased pollution and environmental damage

• Improved water quality and aquatic life

• Harmful effects on the ecosystem and human health

• Increased biodiversity and ecosystem stability

Tags

NGSS.MS-LS2-5

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

Toxin concentrations _____________ as you go up the food chain.

• do not change

• increase

• decrease

Identify the process shown in this diagram.

• Extinction
• Toxin Accumulation
• Pollution
• Biomagnification

Tags

NGSS.MS-LS2-3

Which organism in this diagram has the highest DDT concentration?

• Zooplanktons
• small fish
• large fish
• Fish-eating birds

If a toxin was introduced to the water of an aquatic ecosystem. Which organism would have the highest accumulation of the toxin in their tissues and why? Explain

Type the answer in the box.

Tags

NGSS.MS-LS2-4