Which of the following describes the importance of biodiversity to an ecosystem?

• a. People like to be able to see all the different plants and animals
• b. If there aren�t all the different species, there will be resources that aren�t being used
• c. Biodiversity is not as important as many people think
• d. Biodiversity can help minimize the effects of losing a species.

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NGSS.MS-LS2-5

Biodiversity, aka biological diversity, usually refers to

• the same species in a general location

• the number of different species in a given area

• the number of animal species in a given area

• the number of plant species in a given area

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NGSS.MS-LS2-5

A species that is likely to become extinct if protective measures are not taken immediately is known as

• threatened species

• endemic species

• keystone species

• endangered species

a species that is not native to a particular region and has no natural predators and little competition

• consumer species

• producer species

• invasive species

• adapted species

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NGSS.MS-LS2-5

In a particular habitat, owls eat mice and mice eat grass. If the owl population suddenly grows, then most likely

• the number of mice will decrease and the amount of grass will not change.
• the number of mice will increase and the amount of grass will increase.
• the number of mice will increase and the amount of grass will not change.
• the number of mice will decrease and the amount of grass will increase.

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All living and nonliving things that surround an animal are part of its

• food chain
• life cycle
• atmosphere
• habitat

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Which habitat exhibits the greatest biodiversity?

• A habitat with 15 different species with about 300 individuals each
• A habitat with 10 different species with about 75 individuals each
• A habitat with 4 different species with about 150 individuals each
• A habitat with only one species with about 2000 individual

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NGSS.MS-LS2-5

What is the MOST likely consequence if a fungal disease killed the grass in this WOODLAND ECOSYSTEM?

• Only the rabbits would be affected, because they are the ones who eat the grass.
• The blueberry bush would begin to grow wild, because it would have more space to grow.
• Nothing would happen; the animals would eat something else.
• The ecosystem would most likely be disrupted, because the grass is one of its primary producers

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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.MS-LS2-4

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What two human activities contribute the most to global warming?

• a. Burning fossil fuels and deforestation
• b. Mining and vehicle exhaust
• c. Burning fossil fuels and agriculture
• d. Deforestation and agriculture

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