Test 4

The low _____ in the Mekong Delta leads to acute saline instruction much deeper than the traditional 30 to 40 km of mainland that is contaminated with saltwater.

• water level

• salt water

• water currents

• sea level

Buying organic food is better for the environment because it uses less _____.

• fertilizer

• fertilize

• fertilizes

• fertilized

Studies reveal that food production will need to increase by 70 percent to _____ the over 9 billion people on Earth.

• give

• supply

• provide

• feed

We will need new technologies to generate energy and use it in clean and safe ways, only from fully _____ sources.

• replaced

• controlled

• renewable

• endurable

Copenhagen has been voted the most _____ city in the world several times.

• ecological friendly

• ecologically soundly

• eco-friendly

• friendly ecologically

Many species are now _____ danger of being extinct as a result of deforestation and habitat loss.

• in

• on

• at

• with

To solve the problems of pollution, it is important to identify the _____ of it.

• reasons

• purpose

• causes

• facts

Animal _____ are being destroyed by human activities.

• places

• habitats

• shelter

• accommodation

_____ of his job as a forester is to take care of these trees.

• Part

• Half

• Most

• All

The rainforests around the world are _____ threat of deforestation.

• in

• by

• under

• on