Competition for Abiotic and Biotic Factors

What terms should replace X and Y in the table?

• elements; compounds

• abiotic; biotic

• microscopic; macroscopic

• natural; man-made

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

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

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

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-LS2-2

Which statement below refers only to biotic components in an ecosystem?

• Evaporation, transpiration, and precipitation are complex processes that cycle water between the atmosphere and the Earth's surface.

• Photosynthesis and respiration are not considered atmospheric processes.

• Vegetation is an indicator of several environmental factors, including precipitation, temperature, soil, geology, and wind.

• In Yellowstone Park, shrubs have expanded their range into large areas formerly populated by short grasses, due to overgrazing and trampling by livestock.

Tags

NGSS.MS-LS2-4

____________________ is the struggle among organisms for resources such as food, water, and space.

• crowding

• predation

• limitation

• competition

Tags

NGSS.MS-LS2-1

are abiotic and biotic factors that limit the growth of a population.

• Carrying capacity

• Environmental coefiicients

• Limiting factors

• Environmental pressures

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The ________________ capacity of an environment is limited by the availability of biotic and abiotic resources.

• external

• carrying

• limiting

• interacting

Tags

NGSS.MS-LS2-1