Ecosystems

Which of the following refers to a community of organisms, along with their nonliving, abiotic environment?

• ecosystem

• community

• population

• species

Tags

NGSS.MS-LS2-3

Influences like water and sunlight would be considered what kinds of influences?

• living

• abiotic

• biotic

• essential

Tags

NGSS.MS-LS2-3

What happens to a population and to competition when there is a reduction of living space?

• The population expands and competition intensifies.

• Competition strengthens while the population contracts.

• The population increases as competition decreases.

• Competition weakens and the population decreases.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which interaction between animals BEST controls the population of a species?

• wild animals marking their territories

• remora fish traveling with sharks

• lions preying on zebras

• wolves traveling in packs

Tags

NGSS.MS-LS2-4

The meanings of the terms habitat and niche are often confused or are intertwined. Which of the following describes the difference between these two terms?

• A niche is the place where an organism lives. A habitat is the job or role of an organism.

• A habitat has to do with how the organism interacts with its environment. A niche is the job or role of an organism.

• A habitat is a place where an organism lives. A niche is the job or role of an organism.

• A niche involves the food, water, and shelter that an organism has access to. A habitat is a place where an organism lives.

Which statement best describes the difference between a biome and an ecosystem?

• Biomes make up ecosystems.

• Ecosystems make up biomes.

• They are the same thing.

• Biomes and ecosystems are not related.

Which of the following best describes the difference between density-independent factors and density-dependent factors?

• Both will happen regardless of the population size

• Neither have anything to do with population size

• Independent includes competition & predation. Dependent includes flooding and deforestation.

• Independent will affect regardless of population size. Dependent are specific to population size.

Which of the following are examples of density dependent factors on an ecosystem?

• parasitism and forest fires

• predation and competition

• tornadoes and disease

• predation and flooding

Tags

NGSS.MS-LS2-2

Which of the following are examples of density-independent factors on an ecosystem?

• flooding and building dams on a river

• predation and flooding

• competition and forest fires

• disease and tornadoes

Tags

NGSS.MS-LS2-4

What are the five levels of environmental organization from largest to smallest?

• biosphere, ecosystem, community, population, organism

• ecosystem, biosphere, population, organism, community

• biosphere, population, ecosystem, community, organism

• biosphere, ecosystem, population, community, organism