Energy Flow and Succession in Ecosystems

An ecosystem contains organisms interacting with each other and their physical environment. Which of these is the BEST indicator of a healthy ecosystem?

• There are few decomposers.

• There are many different species.

• There are few herbivores.

• There is a large population of only one species.

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NGSS.MS-LS2-2

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What is an abiotic factor found in a Desert Ecosystem?

• sand

• Both (B) and (C)

• temperature

• cacti

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Which of the following is a biotic part of the forest?

• rocks

• Both (B) and (C)

• water

• trees

_______ is the source of energy for almost all living things.

• Sunlight
• Food

• Water

• Oxygen

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NGSS.MS-LS1-6

Abiotic are all of the __________ components in an ecosystem.

• Non-living
• Organism

• Community

• Living

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NGSS.MS-LS2-3

Moose are grazing animals. They eat grass. If there were too many moose in an area, there would probably be...

• tall shrubs

• many other large grazing animals

• fewer predators of bison

• less grass and more bare soil

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What is the definition of a food chain?

• All the plants and animals that live in the same area and interact with one another.

• The maximum population size of a species that the environment can sustain.

• One possible path of energy within the ecosystem.

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A fallen tree branch would be considered abiotic.

• True

• False

What is an ecosystem?

• A system to stop pollution

• All of the biotic and abiotic factors in an area that interact with each other.

• Largest number of individuals an ecosystem can support

• Environmental factors that limit the success of a population

Using the energy pyramid, which level would store the most energy?

• Tertiary Consumers

• Primary Consumers

• Secondary Consumers

• Producers

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