Science EOG Practice

How would a large increase in the salinity of an estuary most likely affect the ecosystem of the estuary?

• All organisms would die.

• All organisms would continue to live as they now do.

• The number of salt-tolerant organisms would increase, and the number of salt-intolerant organisms would decrease.

• The number of salt-intolerant organisms would increase, and the number of salt-tolerant organisms would decrease.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

A geologist identifies the identical index fossils in rock layers from two different areas. Which conclusion is best supported by this discovery?

• The deposition rate of the two rock layers was identical.

• The fossil organism evolved independently in the two separate areas.

• The two rock layers were deposited at approximately the same time.

• The index fossil will also occur in sediment deposited on top of these rock layers.

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NGSS.MS-ESS1-4

Which is the most accurate method scientists use to predict the age of Earth?

• relative dating of rock layers

• radioactive dating of rocks

• comparing the ages of different fossils

• investigating core samples from the Arctic

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NGSS.HS-ESS1-5

NGSS.HS-ESS1-6

Which best explains why mammals became dominant after the mass extinction of the dinosaurs?

• They had traits that helped them adapt to environmental changes.

• They were larger than dinosaurs and ate different foods.

• They lived in different areas on Earth than dinosaurs.

• They were able to hibernate for thousands of years.

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NGSS.MS-LS4-4

If a bat, an alligator, and a bird evolved from a common ancestor, what most likely can be concluded?

• They have similar anatomical structures.

• They live in the same part of the world.

• They are in the same biological classification.

• They are able to survive changes in their environments.

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NGSS.MS-LS4-2

What is the function of the mitochondria in a cell?

• To control cell activities

• To produce energy

• To store DNA

• To build proteins

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NGSS.MS-LS1-2

What happens to atoms in a chemical reaction?

• They disappear

• They change into new elements

• They are rearranged to form new substances

• They remain completely unchanged

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NGSS.MS-PS1-5

Which is an example of a chemical reaction?

• a pot of water boiling

• an iron nail rusting

• a piece of ice melting

• a sugar cube dissolving in tea

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which example BEST represents an interconnection between an aquatic food web and a terrestrial food web?

• Fish eat insects that land on the surface of a pond.

• Snakes eat bird eggs.

• Bats eat mosquitos.

• Mountain lions catch and eat deer.

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NGSS.MS-LS2-2

Which project is MOST LIKELY to interest a scientist working at a biotechnology company?

• study and reconstruction of fossilized bones

• conservation of key species within ecosystems

• development of genetically modified corn plants

• prevention of sewage leaking into water supplies

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4