We are trying our best to………………………natural habitats which will help to save our planet  for future generations.

• preserve

• convert 

• add

• abandon

Some chemicals can be used for cleaning surfaces, but they affect the air quality and………………health problems 

• improve

• cause

• release  

• disturb

Green technology uses renewable resources that are never…………………………..

• used 

• absorbed

• depleted

• organised 

The………………………………..of natural resources is essential in today’s economic and Technological development. 

• pollution

• depletion

• consumption

• preservation  

The tiger is ____ of extinction. It is difficult to find them in the wild.

• on the wing

• on the rocks

• on the verge

• on the ground

CLOSEST in meaning

For environmental safety, we need to find ways to reduce emission of fumes and smoke of factories.

• leak

• release

• poison 

• pollutant

CLOSEST in meaning

Nylon is a man-made fibre, the use of which has helped more people to have cheaper and more colourful clothes to wear.

• natural

• plastic

• synthetic    

• artificial

CLOSEST in meaning

We have to suffer from traffic congestion and pollution every day.

• accident

• fullness

• mass   

• crowd

CLOSEST in meaning

We can protect many species by keeping them in wildlife reserves.

• protected land

• saved land

• park  

• Zoo

CLOSEST in meaning

scientists agree that global warming poses great threats to all species on Earth.

• irritations

• risks

• reliefs

• protection