A symbiotic relationship where both organisms benefit

An interaction where both organisms require a limited resource

The preying of one animal on another

A symbiotic relationship where one organism benefits, while the other is unaffected

What is commensalism?

A symbiotic relationship where one organism benefits, while the other is unaffected

A symbiotic relationship where both organisms benefit

An interaction where both organisms require a limited resource

The preying of one animal on another

A symbiotic relationship where both organisms benefit

An interaction where both organisms require a limited resource

A symbiotic relationship where one organism benefits, while the other is unaffected

An interaction where both organisms require a limited resource

A symbiotic relationship where both organisms benefit

The preying of one animal on another

A symbiotic relationship where one organism benefits, while the other is unaffected

A symbiotic relationship where one organism benefits, while the other is harmed

A symbiotic relationship where both organisms benefit

An interaction where both organisms require a limited resource

A symbiotic relationship where one organism benefits, while the other is unaffected

How would the removal of a keystone species affect an ecosystem’s biodiversity?

It would decrease biodiversity.

It would increase biodiversity.

It would have no effect on biodiversity.

It would only affect plant species.

Explain how a change in an abiotic factor (such as sunlight) would affect biodiversity.

It could increase or decrease biodiversity.

It would only affect animal species.

It would have no effect on biodiversity.

It would only affect aquatic ecosystems.

How does the hydrologic cycle (water cycle) move water through the environment?

Through evaporation, condensation, and precipitation.

By only being absorbed by plants.

What are four elements/compounds that cycle through ecosystems? Explain why they are important.

Oxygen, nitrogen, carbon, and hydrogen; they are important for life processes.

Gold, silver, iron, and copper; they are important for economic value.

Helium, neon, argon, and krypton; they are important for lighting.

Calcium, magnesium, sodium, and potassium; they are important for rock formation.

Many farmers plant legumes (like peas) to improve nitrogen levels in their soil. How does this work?

Legumes have bacteria in their roots that fix nitrogen.

Legumes release nitrogen gas into the air.

Legumes convert nitrogen into oxygen.

Legumes absorb nitrogen from the air.

Explain the importance of bacteria in the nitrogen cycle.

Bacteria fix nitrogen, making it available to plants.

Bacteria produce oxygen for plants.

Bacteria convert nitrogen into carbon dioxide.

Bacteria remove nitrogen from the soil.

What 3 factors (from our population lesson) can greatly increase or decrease the size of a population?

Birth rate, death rate, immigration

Temperature, humidity, sunlight

Food availability, water supply, shelter

Predation, disease, competition

How is primary succession different from secondary succession?

Primary succession starts on bare rock, while secondary succession occurs on existing soil.

Primary succession occurs on existing soil, while secondary succession starts on bare rock.

Why are pioneer species important for primary succession?

They modify the environment, making it suitable for other species.

They are the final stage of succession.

Ecology and Environmental Science Quiz

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9th Grade

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Practice Problem

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Medium

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NGSS

MS-LS2-3, MS-LS2-4, MS-ESS3-4

Standards-aligned

Jonathan Coe

Used 3+ times

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Population

Ecosystem

What is the study of the interactions among organisms and their environment called?

Ecology

Biology

Geography

Sociology

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