NGSS.HS-LS2-6

What may happen if the snowshoe hare was removed from the food web pictured?

• The insects in the habitat would increase.
• The shrew population would decrease due to being only hawk food source.
• The willow tree population would decrease.
• Foxes would dies due to no food source. 

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NGSS.HS-LS2-6

In this tundra food web, if grasses were removed what would happen to the sustainability of the ecosystem?

• There would be an overpopulation of arctic hares and lemmings.
• Polar bears would move to a new ecosystem
• The ecosystem would collapse because it lost its main producer
• Wildflowers would die out from the ecosystem

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NGSS.HS-LS2-6

What do we call it when an ecosystem is able to maintain its structure and be stable over time?

• It is dependable.
• It is sustainable.
• It is independent.
• It is adaptable.

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NGSS.HS-LS2-6

What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.

• commensalism
• mutualism
• parasitism
• predation

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NGSS.HS-LS2-6

Currently sharks are on a rapid decline due to overfishing. If sharks go extinct will this affect the biodiversity of the ocean?

• No, sharks are not important.
• No, sharks will only affect the seal populations.
• Yes, it will disrupt the entire food chain in the ocean.
• Yes, but only a little.

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NGSS.HS-LS2-6

What are the effects of deforestation ?

• loss of habitat
• increased green house gasses 
• soil erosion and flooding
• all of the above

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NGSS.HS-LS2-6

An environmental change that removed which of these organisms from the ecosystem would cause the most instability in the ecosystem?

• Auklets
• Foxes
• Salmon
• Zooplankton

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NGSS.HS-LS2-6

Which of the following will have the longest term impact on organisms in an ecosystem?

• flooding
• oil spill
• blizzard
• global warming

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NGSS.HS-LS2-6

What causes coral bleaching?

• oil spills

• warmer water temperatures

• overfishing

• red tide

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NGSS.HS-LS2-6

Here are the steps during cultural eutrophication. Which answer choice has them in the correct order?

A)Algal bloom

B)Leaching of nutrients from fertilized lands

C) Fish die off

• A, B, C

• C, B, A

• B, A, C

• C, A, B

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NGSS.HS-LS2-6