Ielts vocabulary Masterclass book + ielts listening & Reading Dictionary: Dominate Proficiency Level Vocabulary for ielts listening, Reading, Writing & Speaking

Unprecedented =
something that has never happened before
Safeguard
= protect against something

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Exercise
Choose a word or phrase from the definitions above and write it in the
correct gap below.
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If there is more than one possible answer, choose the best option
for the sentence.
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You might need to use the same word or phrase more than once
in some cases.
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You may need to adapt the form of the word to fit into the
sentence. For example, you might need to change a verb to third
person singular to ensure subject-verb agreement like
bond-bonds.
1. Trees are ……………… for the environment.
2. We must ………………….. the environment against the
destruction of habitats and the over-exploitation of natural
resources such as fresh water and fisheries among other issues.
3. The most dangerous gaseous air ……………… released into the
air in urban areas are Sulphur dioxide, nitrogen dioxide, and
carbon monoxide;
4. I grew up in an …………………… community so farming was
still in my blood.
5. ………………. is a major issue in many forests and jungles all
over the world. As more trees are chopped down, these natural
areas are shrinking more and more.

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6. Trees are ……………….. natural resources, but they should be
treated with extreme care.
7. Lack of investment in new methods may result in deterioration of
the ……………… system in the area and a subsequent decline of
the local economy.
*Notes:
Deterioration= decay. When something breaks down and dissolves
Subsequent= eventual. When something happens as a result of
something else. 
8. There is a ………………. need for housing in the area.
9. Half of these trees could be gone within five years, threatening
jobs and ……………...
10. Governments were not sure how to deal with the situation
because it was …………….. in 21st-century life.

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