On Screen B2 Module 2/Unit 2d

Додано: 28 березня 2021
Предмет: Англійська мова, 10 клас
Тест виконано: 31 раз
15 запитань
Запитання 1

Text: Could Sea Otters Save the Planet?

“Furry swimming creatures could be star fighters in the struggle to stop global warming.”

Sea otters have another important job besides swimming around the Pacific Ocean and looking incredibly cute. Recent scientific studies suggest that these furry swimmers also take a big bite out of global warming.

How can a sea otter help slow down climate change? A sea otter's favorite meal is sea urchin, a spiny underwater animal that eats a type of seaweed called kelp. When sea otters eat their favorite chow, they keep the population of sea urchins down. That allows underwater forests of sea kelp to flourish.

These kelp forests reduce the amount of carbon dioxide, a harmful greenhouse gas, in the Earth's atmosphere. Carbon dioxide helps trap heat in the atmosphere. Experts say that too much of this gas leads to climate change, and many say that global warming may cause changes that could prove deadly for life on Earth.

BROKEN FOOD CHAIN

Scientists say sea otters could help the planet just by eating, but there's one problem: There aren't enough sea otters to keep the sea urchin population in check. Therefore, sea urchin populations are rising while the number of kelp forests is falling.

In the past, sea otters almost became extinct because hunters killed them for their fur. Now, killer whales—another species brought back from the brink of extinction—may be significantly lowering sea otter populations. The number of otters is so low, they have been listed as threatened under the U.S. Endangered Species Act.

Scientist Chris Wilmers from the University of California, Santa Cruz, recently studied the effect sea otters have on global warming. His study found that when kelp forests lose their otters, "all you are left with is piles of urchins and very little else."

Wilmers says that if otters were restored to healthy populations along the coast of North America, the ocean ecosystem could keep around 10 million tons of carbon from entering the Earth's atmosphere.


Task one: Chose the multiple-choice item that makes the sentence correct.

1.  Sea otters are indigenous to



варіанти відповідей

the Atlantic Ocean

the Pacific Ocean

the Indian Ocean

the Mediterranean Sea

Запитання 2

 These furry swimmers could help to combat


варіанти відповідей

littering

pollution

global warming

The Greenhouse Effect

Запитання 3

Sea otters love to eat


варіанти відповідей

fish

land urchins

kelp

sea urchins

Запитання 4

Kelp forests help to reduce the amount of



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Carbone dioxide

Hydrogen

Carbone monoxide

Calcium hydroxide

Запитання 5

Humans hunt sea otters for their

варіанти відповідей

oil

skin

fur

meat

Запитання 6

Carbon dioxide is a ______ greenhouse gas.



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poisonous

damaging

heavy

beneficial

Запитання 7

Killer whales eat



варіанти відповідей

sea otters and kelp

fish and kelp

sea otters

sea urchins

Запитання 8

Task two:

The more sea urchins the less kelp; the less sea urchins, the more kelp.


варіанти відповідей

true

false.

Запитання 9

 If in healthy numbers, sea urchins could keep around 10 million tons of carbon from entering the Earth's atmosphere. 


варіанти відповідей

true

false

Запитання 10

 Scientist Chris Wilmers from the University of Santa Cruz recently studied the effect killer whales have on global warming. 


варіанти відповідей

true

false

Запитання 11

Due to the number of otters being so low, the U.S. Endangered Species Act has listed them as threatened. 


варіанти відповідей

true

false

Запитання 12

Humans hunt killer whales, killer whales hunt sea urchins, sea urchins hunt sea otters and sea otters eat kelp.


варіанти відповідей

true

false

Запитання 13

Both sea urchin populations and kelp forests are growing.


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true

false

Запитання 14

Wilmers says that otters will be restored to healthy populations along the coast of North America with the next few decades. 

варіанти відповідей

true

false

Запитання 15

Exhaust fumes cause a lot of … , especially in big cities

варіанти відповідей

recycling

pollution

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