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VOL 5 Test 6 - American Salt Marshes
Section 4

Questions 1-4

1-4

Complete the sentences below. Write ONE WORD ONLY for each answer.

  • The salt content in marshes can be as high as that of the 1
  • At different times of the day, there are changes in salinity and in the 2
     and warmth of the water.
  • Animals such as worms and shrimps feed on the 3
     that grow in the marsh.
  • Marshland in the US has been used in the past for 4
     cultivation.

Questions 5-8

Choose the correct letter, A, B or C.
5

The speaker says that one result of erecting artificial walls in salt marshes is that

Awater levels can get too high.
Bwildlife has less space.
Cwater quality is difficult to control.
6

Some people have complained about the building of dikes because

Aaccess for walkers is reduced.
Bthe insect population has increased.
Cthe natural beauty of the area is affected.
7

In the 20th century, a large proportion of marshes in America became

Asalt extraction sites.
Bresidential areas.
Cprotected insect reserves.
8

There are now laws which help to prevent

Athe erosion of soil.
Bthe building of more walls.
Cthe extinction of sealife.

Questions 9-10

9-10

Complete the notes below. Write NO MORE THAN TWO WORDS for each answer.

The Horseshoe Crab

  • Related to: spider Most common food: 9
  • Time of year when female lays eggs: 10

1

2

3

4

5

6

7

8

9

10

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