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Which of the following BEST explains what could happen if a food chain or food web became unbalanced?

• Change in a food chain/web, like the extinction of a species, will have NO impact on the balance of the ecosystem.

• Change in a food chain/web, like the extinction of a species, can have a positive impact on the balance of the ecosystem.

• Change in a food chain/web, like the extinction of a species, can have a negative impact on the balance of the ecosystem.

• All answers are plausible.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5

a _______________ is several interconnected food chains

• Food chain

• Food Web

• Energy pyramid

• Carbon Cycle

Which of the following is a producer in the food chain below?

Grass --> Grasshopper --> Bird --> Snake --> Hawk

• Snake

• Bird

• Grasshopper

• Grass

The arrows on a food chain/food web represent __________________________________.

• the rate of consumption between organisms

• the rate of decomposition of dead organisms

• the flow of energy from one organism to another

• the flow of water and organic carbon from the abiotic to biotic factors

Tags

NGSS.MS-LS2-3

Without __________, energy cannot enter the producers or make its way up a food chain.

• the sun

• the water cycle

• the carbon cycle

• NaCl and CO

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Producers/Autotrophs

• consume other organisms for their energy

• make their own food using light or chemicals

• break down dead organisms

• all the above

Tags

NGSS.MS-LS2-3

Which of the following best describes an energy pyramid?

• Each level represents a producer and the amount of energy available at each level

• Each level represents a trophic level and the amount of energy available at each level

• Each level represents a set of decomposers and the amount of energy available at each level

• Each level represents a apex predator

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The amount of energy ________________ from the bottom of the energy pyramid to the top of the energy pyramid.

• increases

• decreases

• stays the same

• multiplies by 100%

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Only about ____________ of the energy from one trophic level in an energy pyramid is passed on to the next trophic level in an energy pyramid.

• 10%

• 90%

• 100%

• 1%

Tags

NGSS.MS-LS2-3

In this energy pyramid, which organisms have the most energy available?

• Producers

• Carnivores

• Herbivores

• Top Predator

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3