Apprendre l'anglais > Cours & exercices d'anglais > Exercices d'anglais > test d'anglais n°102410 : Réchauffement climatique en Arctique

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Réchauffement climatique en Arctique

Global warming in the Arctic

Scientists and meteorologists are stunned at the result of scientific studies: warming and ice melting in the Arctic have been twice as fast as the rest of the globe over the last fifty years.

The ice sea has shrunk by 20 % in summer and 8 % annually in winter over the past three decades.(the total loss is as big as Texas and Arizona combined). Snow on land has decreased by about 10 % and temperature during the winter has risen as much as 5 to 7 degrees in Alaska and eastern Canada.

They predict alarming development: Temperature could still rise further 13 degrees. The sea-level could climb and flood low areas. It’s already happened in the north of Alaska.

There will be appalling repercussions.

In coastal areas

As protective ice disappears, coastal erosion will increase, damaging the Inuit habitats in Greenland.
The permafrost which begins melting underneath the tundra will destabilize the ground. damaging minings and oil drillings.

On sea two main species are expected to be on the brink of extinction: seals and white polar bears.

The first one: the seal. The female gives birth on the sea floe which is shrinking. Nowadays this phenomenon contributes to reduce the number of seals considerably. The second one: the magnificent fearsome, predator, starving white polar bear that roams his icy kingdom, stalking his favourite prey :the seal.

On land

The migratory birds could be prevented from nesting. Their population could dwindle as much as 50 % by the year 2100.
A large variety of animals like red foxes, have already moved northward to areas become less cold and red foxes have appeared in these areas become more temperate
The Arctic population relying on fish, seals, caribous for food and trade will be obliged to change their way of life.

However there will be a few advantages...

In summer this massive reduction of the sea floe between the northern coasts of Russia and Canada would open new shipping lanes.
Some basic crops could grow such as barley, alfalfa.

Exercice : Répondez aux questions faisant appel à la compréhension du texte et de son vocabulaire. Choisissez dans la liste déroulante le mot juste.

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1. Where have the coasts already been flooded ? In

2. The warming is the same in the Arctic as in the rest of the globe.

3. How many times is warming faster in the Arctic than in the rest of the globe?

4. What is the name of the ice beneath the tundra ?

5. The permafrost begins melting. Which plant is destabilized ?

6. Loss of tundra prevents migratory birds from

7. Is the polar bear like a big cuddly toy or a predator ?

8. Are seals and white bears in great number or ?

9. Which crop is supposed to grow ?

10. What is the biggest advantage of the reduction of the ice floe ? The development of