ENVS LT 7.3 Review

What is bioaccumulation?

• The sudden increase of substances in organisms

• The gradual build-up of substances within living organisms over time

• The immediate release of substances from organisms

• The decrease of substances in organisms over time

Tags

NGSS.MS-LS2-3

What type of pollutants are known to resist breakdown and accumulate in organisms?

• Biodegradable pollutants

• Persistent Organic Pollutants

• Non-toxic pollutants

• Water-soluble pollutants

Tags

NGSS.MS-PS1-3

What happens to toxic substances as they move up the food chain in biomagnification?

• They decrease in concentration

• They remain the same in concentration

• They increase in concentration

• They disappear completely

Which of the following activities contribute to biomagnification?

• Gardening

• Agriculture and industries

• Reading

• Painting

Tags

NGSS.MS-ESS3-4

Which organisms are most affected by biomagnification?

• Organisms high on the food chain

• Organisms low on the food chain

• Organisms that do not eat

• Organisms that live on land

How do toxic substances enter the bodies of organisms low on the aquatic food chain?

• Through photosynthesis

• By being absorbed or eaten

• By breathing air

• Through sunlight

What is the effect of persistent organic pollutants in ecosystems?

• They break down quickly

• They increase the build-up of pollutants in organisms

• They have no effect

• They decrease the build-up of pollutants

Tags

NGSS.MS-LS2-3

What takes place first, bioaccumulation or biomagnification?

• Bioaccumulation

• Biomagnification

• Both occur simultaneously

• Neither occurs

An increase in the concentration of a chemical in a biological organism over time

• Bioaccumulation

• Biofuel

• Biomagnification

• Bioremediation

What is pollution?

• An undesirable change to the natural environment caused by the introduction of substances that are harmful to living organisms

• A beneficial change to the natural environment

• The process of recycling waste materials

• The natural process of plant growth

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4