Factories ____ toxic chemicals that ____ not only the soil, but also the air we breathe.

• contaminate

  boom

• endanger

  contaminate

• contaminate

  sustain

• emit

  contaminate

Some animals like the green turtles are ____ because their habitats are destroyed.

• contaminated

• endangered

• species

• booming

The Udzungwa forest is considered to be one among the highest-ranking ____ for bird watching in Africa.

• destinations

• ecotourism

• ecosystems

• wilderness

People should start buying reusable or ____ products to save the environment.

• contaminated

• sustainable

• endangered

• wilderness

Many ____ of birds like the ____ eat seeds and live in permanent habitats.

• species

  finches

• endangered

  finches

• finches

  wilderness

• finches

  ecosystem

Scientists are trying to discover the changes in the ____ that resulted in some animal species dying out.

• wilderness

• immigration

• ecosystem

• finches

The current economic ____ in the GCC is driven by the rapid discovery of oil.

• destination

• boom

• ecotourism

• immigration

The police arrested many illegal ____ because they do not have the necessary documents to be in the country.

• immigration

• species

• immigrants

• emissions

Travelling in harmony with nature is the new trend. This is called ____.

• ecotourism

• immigration

• destinations

• boom

On your way to Salalah, you see a vast ____ of desert. Nothing is being built there.

• destination

• ecosystem

• ecotourism

• wilderness