Abiotic and Biotic Factors

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-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-2

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-LS2-3

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 speed at which the river water flows toward the ocean

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

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

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-LS2-1

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-LS2-4

NGSS.MS-LS2-2

An abiotic component of an ecosystem is represented by the —

• bats under a bridge in Austin, Texas

• population of deer on a deer lease in Central Texas

• attack on a wheat field by fungus

• monthly average rainfall in Texas

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

John takes the subway to work every morning. He enjoys drinking his coffee and talking to people that sit near him. The other people on the subway are an example of what type of factor?

• Abiotic

• Biotic

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

Termites are tiny insects that can cause severe damage to homes and other structures that consist of wood. Termites are an example of what type of factor.

• Biotic

• Abiotic

Tags

NGSS.MS-LS2-4

The Sun is the source of all energy within an ecosystem. Plants depend on light from the sun in order to perform the process of photosynthesis. Sunlight is an example of what type of factor?

• Biotic

• Abiotic

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6