More and more children _______ from asthma in recent years.

Industrial enterprises ___________ tons of harmful substances leading to the greenhouse effect and acid rains.

To respond effectively to danger, everyone ______ understand how important it is to preserve the environment. 

The air _______ worse in the last twenty years.

Over 25 years, the radiation condition of the territories around the Chernobyl station __________ significantly. 

Today, the transition to renewable energy sources such as solar, wind, biogas and geothermal energy __________ increasingly popular and cost-effective.

Some people _________ anything to be recycled.

Some people still _______________ the sun ______________ round the earth.

Obtaining electricity from ecologically clean sources _________ the problem of depletion of fuel minerals and air pollution by TPP emissions.

In the course of human activity, greenhouse gases are released into the atmosphere, which _____ to the greenhouse effect