6.12e

Which of the following best describes the relationship between abiotic and biotic factors in an ecosystem?

• Biotic factors rely on abiotic factors such as water, shelter, and light for survival.

• Abiotic factors rely on biotic factors, such as types of trees, to exist

• Biotic factors only rely on other biotic factors for survival

• There is no relationship between abiotic and biotic factors; they can survive on their own.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

A hollow, sealed glass sphere contains sand, water, air, algae, and tiny brine shrimp. The sphere is a model ecosystem. Which of these is a biotic factor of this ecosystem?

• air

• algae

• sand

• water

Tags

NGSS.MS-LS2-4

Refer to the diagram. Which list includes abiotic factors only?

• Items A, C, D

• Items B, C, E

• Items A, D

• Items A, B, C, D, E

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Which of these is a biotic factor in a river ecosystem?

• the types of microorganisms that live in the river water

• the amount of soil and other particles carried by the river

• the amount of rain that flows off the land and into the river

• the speed at which the river water flows toward the ocean

In many desert ecosystems, days are hot and nights are cold. Water is scarce, so animals seek water wherever possible. The spines of a cactus are actually leaves adapted to conserve water. The cactus plants have also adapted to live in thin, sandy soil. Which of the following is a biotic component of a desert ecosystem?

• the thin, sandy soil

• the wide temperature range

• the scarcity of water

• the spiny cactus leaves

Tags

NGSS.MS-LS1-5

Which of the following is a biotic factor in an ocean ecosystem?

• the salt content of the water

• the temperature of the water

• the fish in the water

• the oxygen in the water

Tags

NGSS.MS-LS1-4

Which of the following MOST completely describes the components of a pond ecosystem?

• the soil and water that make up the pond

• the organisms and non-living environment in and around the pond

• the plants and animals that live in and around the pond

• the fish and other aquatic animals in the pond

Tags

NGSS.MS-LS2-3

What terms should replace X and Y in the table?

• elements; compounds

• abiotic; biotic

• microscopic; macroscopic

• natural; man-made

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-1

What abiotic factors might a student study in an ecosystem?

• Herbivores, carnivores, and omnivores

• Algae and invertebrates

• Predators and prey

• Water, temperature, and sunlight

Tags

NGSS.MS-LS2-3

In the graphic organizer above, what word could we use to replace the word living?

• Abiotic

• Biotic

• Ecosystem

• Organism

Tags

NGSS.MS-LS2-3