NC Life Science

How are mutualism and parasitism different?

• Both organisms benefit in mutualism, while in parasitism only one organism benefits at the other’s expense.

• Both organisms benefit in parasitism, while in mutualism only one organism benefits at the other’s expense.

• Both organisms benefit in mutualism, while in parasitism one organism benefits, and the other is neither harmed nor benefits.

• Both organisms benefit in parasitism, while in mutualism one organism benefits, and the other is neither harmed nor benefits.

Tags

NGSS.MS-LS2-2

Where do plants get the food they need for energy?

• They absorb it directly from the sun.

• They absorb it directly from the soil.

• They produce it during photosynthesis.

• They receive it from atmospheric gases.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which best represents the flow of energy within an aquatic ecosystem?

• algae → insects → fish → turtle → sunlight

• insects → algae → fish → turtle → sunlight

• sunlight → insects → algae → fish → turtle

• sunlight → algae → insects → fish → turtle

Tags

NGSS.MS-LS2-3

How owuld 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-LS2-4

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.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

Which of these would most likely happen to a species that is not able to adapt to a changing environment?

• The species would become extinct over time.

• The species would develop mutated cells.

• The species would develop resistance to disease.

• The species would change the environment.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-1

NGSS.MS-LS4-4

The population density of marine life is denser along the shorelines of the ocean than farther out in the deep waters of the ocean.  Which statement provides the BEST reason for this situation?

• Ocean currents prevent many smaller marine organisms from living in deep water.

• The shallow waters have fewer predators.

• Coastal waters are less polluted than the deeper waters of the ocean.

• There are more nutrients in shallow waters.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which is classified as an element?

• carbon dioxide

• iron

• vinegar

• water

Which statement is true about a chemical reaction?

• The physical states of the atoms in the reactants determine the products.

• Some of the atoms in the reactants will be a part of the products.

• The number of atoms in the reactants determines the products.

• All of the atoms in the reactants will be a part of the products.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which is the best example of a chemical change?

• butter melting

• egg cooking

• paper tearing

• water evaporating

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5