5.04 Case Study: Ecosystem Dynamics (Our Planet | Jungles)

What percentage of the world's land area do rain forests cover?

• 5%

• 7%

• 13%

The Congo's gorilla population has halved over the last two years. What has caused the decline in their population size?

• habitat loss

• climate change

• poaching for bushmeat

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NGSS.MS-LS2-1

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What percentage of New Guinea's plants and animals are endemic (found nowhere else on Earth)?

• less than 25%

• about 50%

• more than 75%

What unique method does the velvet worm use to capture its prey?

• glue guns

• claws

• venomous bite

What is the significance of frogs in the Amazon rainforest?

• 
  They are the largest animals in the Amazon.

• 
  They are an indicator of a healthy forest.

• They are the primary food source for other animals.

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What is the primary benefit of the checks and balances provided by the Cordyceps fungus?

• 
  It protects the jungle's incredible diversity.

• 
  It increases the number of predators.

• 
  It decreases the number of plant species.

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NGSS.MS-LS2-2

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According to the video, what is the current state of the world's rainforests?

• They are becoming deserts.

• They are falling in diversity.

• 
  They are unaffected by human activity.

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NGSS.MS-ESS3-4

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Humans have impacted the biodiversity in rainforests around the world.

According to the video, how are humans impacting rainforest biodiversity?

Optional Sentence Starter: According to the video, humans are impacting rainforest biodiversity by . . .

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NGSS.MS-ESS3-4

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Match the predator-prey relationships that you saw in the video. The category titles are predators. Match the prey to each one.

Groups:

(a) Silverback gorilla

,

(b) Velvet worm

,

(c) Jaguar

,

(d) Leafcutter ants

• fruits and seeds

• leaves

• spider monkeys

• insects

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