Toxicity in an Ecosystem

In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?

• 80%
• 90%
• 10%
• 20%

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The collective mass of all living things in a particular area or at a specific trophic level of an ecosystem is known as...

• Population Size

• Biomagnification

• Biomass

• Apex Trophism

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

Tags

NGSS.MS-LS2-3

Which animal is the apex predator?

• hawk
• lizard
• snake
• grass

Tags

NGSS.MS-LS2-4

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

• Biotoxicity

• Biomagnification

• Eutrophication

• Predation

Tags

NGSS.MS-LS2-3

What does a food web represent?

• All connections of energy flow throughout all organisms in a habitat.
• The specific ways that mutualism is carried out.
• A single pathway or energy flow between organisms. 
• How carnivores get their food. 

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

The efficiency of energy transfer from a lower trophic level to the next highest level is roughly

• 1%
• 10%
• 100%
• 1000%

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

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

• Bioaccumulation

• Biomagnification

___________ is the increase in concentration of a pollutant in an organism

• Bioaccumulation

• Biomagnification

Tags

NGSS.MS-LS2-3

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

Tags

NGSS.MS-LS2-3