Foss Ecosystems

Which statement BEST explains the flow of energy as it moves through the different levels?

• Energy decreases as it is lost as heat to the environment.

• Energy increases as it is gained from the environment.

• Energy is unavailable because it is used up by the organisms at Level 1.

• Energy is transferred as it is produced by organisms in the next level.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What impact do resources, such as sunlight and water, have on a forest ecosystem?

• They limit the carrying capacity of the ecosystem.

• They increase habitat areas for new organisms entering the ecosystem.

• They decrease the number of diseases resulting from overpopulation.

• They alter the rate of photosynthesis, resulting in more oxygen being produced.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Dead matter and waste would pile up without which type of organism?

• decomposer

• consumer

• producer

Tags

NGSS.MS-LS2-3

The nonliving physical environment of an ecosystem is the __________ component.

• abiotic

• biotic

• diverse

• living

Tags

NGSS.MS-LS2-3

A community of organisms living together with their physical environment is a(n)

• biome

• biosphere

• ecosystem

• atmosphere

The cycling of materials such as carbon, water, and other nutrients are mainly dependent upon soil-dwelling organisms. Use this image to answer questions. Which pair of organisms shown are decomposers?

• Fungi and Bacteria

• Bacteria and Grass

• Fungi and Mice

• Mice and Grass

Tags

NGSS.MS-LS2-3

What is the maximum number of individuals an ecosystem can support?

• population density

• carrying capacity

• succession limit

• habitat maximum

Tags

NGSS.MS-LS2-4

Many different organisms live in Amanda’s garden. The diagram shows a simple food web of some of the organisms in her garden. Predation helps maintain the stability of an ecosystem. Which statement BEST describes how this garden ecosystem can benefit from the presence of snakes?

• The snakes provide an energy source for the moles.

• The snakes consume the mice best adapted to their environment.

• The snakes eat moles, which allows the population of mice to increase.

• The snakes keep the mice from overpopulating, which could deplete plant resources.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Significant destruction of a forest habitat will increase which gas in the atmosphere?

• CO2 (carbon dioxide)

• NO2 (nitrogen dioxide)

• O2 (oxygen gas)

• N2 (nitrogen gas)

Tags

NGSS.MS-LS1-6

In any ecosystem, organisms interact with biotic and abiotic parts of the environment. As a result of all of the interactions, the matter within the system is

• produced when plants grow.

• recycled when organisms die.

• lost when animals and plants die.

• formed when new animals are born.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3