8.L.3.3

Consider this food web: Where is the largest amount of energy found in this food web?

• grass

• hawk

• mouse

• grasshopper

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

The diagram shows a food web for an ocean ecosystem. How would an increasing shark population most likely affect this ecosystem?

• The octopus population would decrease.

• The algae population would decrease.

• The limpet population would decrease.

• The seagull population would decrease.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Look at the picture of the water cycle. Which process is occurring at the arrow labeled 4?

• precipitation

• evaporation

• transpiration

• condensation

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Matter cycles between the environment and living organisms in a complex web of interactions. Which organisms provide the important link in Box A from dead organic matter to matter from the environment?

• decomposers

• autotrophs

• parasites

• photosynthesizers

Tags

NGSS.MS-LS2-3

An energy pyramid is illustrated. Which statement BEST explains the flow of energy as it moves through the different levels?

• Energy decreases as it is lost as heat to the environment.

• Energy increases as it is gained from the environment.

• Energy is unavailable because it is used up by the organisms at Level 1.

• Energy is transferred as it is produced by organisms in the next level.

Tags

NGSS.MS-LS2-3

Mountain pocket gophers are native to Nevada. Which activity of the gopher transfers energy from one trophic level to another in its ecosystem?

• eating the roots of many plants

• reproducing with other gopher species

• storing food underground

• digging burrows to live in

Tags

NGSS.MS-LS2-3

The organisms shown live in the same habitat. Which BEST describes the exchange of energy between the organisms?

• One organism obtains energy from the environment, while the others obtain energy by eating other organisms.

• Each organism obtains energy from the environment.

• Each organism obtains energy by eating other organisms.

• One organism obtains energy by eating other organisms, while the others obtain energy from the environment.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The diagram shows some organisms in an Antarctic food chain. Which BEST describes the role of krill in this food chain?

• primary consumers

• producers

• decomposers

• secondary consumers

Tags

NGSS.MS-LS2-3

Organisms use food energy for various life activities. The diagram shows how food energy is used in a caterpillar. Approximately what percentage of the caterpillar’s food energy is used in the production of biomass?

• 0.17

• 0.34

• 0.66

• 0.5

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-7

The pie chart illustrates the proportions of various gases in the atmosphere of Earth. Three of the following gases are part of Wedge Z in the pie chart. Which gas is NOT a part of Wedge Z?

• nitrogen

• argon

• water vapor

• carbon dioxide