ocabulary for IELTS
to become worse or to make something become worse
As the company's financial problems worsened, several directors resigned.
The continued supply of arms to the region will only worsen the situation.
UNIT 15
The green revolution
acid rain
noun [ U ]
rain which contains large amounts of harmful chemicals as a result of burning substances such as coal and
oil
biodiversity
/ˌbaɪ.ə ʊ .d a ɪˈvɜː.sɪ.ti/
/-oʊ.dɪˈvɝː.sə.t ̬i/
noun [ U ]
the number and types of plant and animal species that exist in a particular environmental area or in the
world generally, or the problem of protecting this
a new National Biological Survey to protect species habitat and biodiversity
climate change
noun [ U ]
the way the world's weather is changing
contaminate
/kənˈtæm.ɪ.neɪt/
verb [ T ]
to make something less pure or make it poisonous
Much of the coast has been contaminated by nuclear waste.
The food which had been contaminated was destroyed.
contaminated
/kənˈtæm.ɪ.neɪ.tɪd/
/-t ̬ɪd/
adjective
The infection was probably caused by swimming in contaminated water/water contaminated with sewage.
contamination
/kənˌtæm.ɪˈneɪ.ʃ
ə
n/
noun [ U ]
The water supply is being tested for contamination (= the presence of unwanted or dangerous substances) .
deforestation
/diːˌfɒr.ɪˈsteɪ.ʃ
ə
n/
/-ˌfɔːr-/
noun [ U ]
the cutting down of trees in a large area; the destruction of forests by people
Deforestation is destroying large areas of tropical rain forest.
disposal
/dɪˈspəʊ.z
ə
l/
/-ˈspoʊ-/
noun [ U ]
1. when you get rid of something, especially by throwing it away
waste disposal
the disposal of hazardous substances
2.
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