Biodiversity and Ecological Services

What is a keystone species?

• a kind of organism that has been part of an ecosystem for a long time

• a species that is brought to a place by humans and becomes part of the local ecosystem

• a species that is critical for the overall health of an ecosystem

• an introduced species that has a negative impact on an ecosystem

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What does biodiversity mean?

• Only one species in an area.
• The different amount of species in an area
• All abiotic life
• Nitrogen fixation

Tags

NGSS.MS-LS2-5

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A healthy forest ecosystem in the Northwest is home to elk, mule deer, chipmunks, ground squirrels, and a variety of plants. What is the relationship between biodiversity and available resources?

• Biodiversity is not affected by changes to available resources.

• Biodiversity decreases the amount of available resources.

• Biodiversity increases with abundant resources and decreases when resources are scarce.

• Biodiversity decreases with abundant resources and increases when resources are scarce.

Tags

NGSS.MS-LS2-4

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Sometimes when a bee pollinates a flower, this action is beneficial to humans. Bees are the main pollinators of many plants that humans eat, such as blueberries, potatoes, apples, celery, and strawberries. What are the benefits that humans receive from the ecosystem called?

• ecological restoration

• sustainability

• ecosystem services

• ecology

Tags

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Pick the cultural service

• natural resources

• water cycle

• plants and animals

• recreational services

Pick the provisional service

• natural resources

• water cycle and nutrients

• plants and animals

• recreational services

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NGSS.MS-ESS2-1

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In what ways do humans harm the ecosystem?

• by introducing invasive species

• by working toward sustainability to maintain diversity

• by maintaining current conditions

• through conservation

Tags

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Human activities cause the most harm to habitats and ecosystems

• True

• False / least

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Fruits, fish, and livestock are all examples of what type of ecosystem service?

• Economic

• Provisioning

• Regulating

• Cultural

Tags

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Bacteria decomposing waste is an example of what type of ecosystem service?

• economic

• regulating

• provisioning

• supporting

Tags

NGSS.MS-LS2-5

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