Nature and climate. Nersysian

... which is partly caused be exhaust fumes from cars and other vehicles, is a very big problem in many large cities around the world.

... occurs when pollution in the air is absorbed by water droplets in clouds.

Everyone should learn to ... energy. Using lights or bulbs only when needed is a good way to do this.

Animal species that no longer exist are called ... .

Scientists say that before we ... oil we will have moved to alternative fuels.

a blanket of snow

вийшло сонце

lightning and thunder

здоровий, чудовий, у хорошому настрої

Indian summer

Дощ ллє як із відра.

come rain or shine

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When it is foggy the flight may be delayed.

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Lightning is a loud noise in the air followed by thunder.

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If it's humid, the air will be very dry.

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A shower is a light wind.

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Mammals give birth to live young animals and the young animals get milk from their mothers.

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Tropical forests are of great value for their amazing natural habitat and the contribution made to the Earth's climate and the way we live.

Birds ...

... of the environment is everyone's responsibitity.

Environmentalists are always warning that protecting ans conservation of the environment is essential to our ... .

Paper is one of the most frequent waste materials, but it can be ... .

How much of the Earth's surface is covered by water, approximately?

A sudden strong shaking of the ground.

A long period of months or years when a region doesn't have any rain.

Toxic substances found in food and air enter the land, accumulate in our bodies and result in poor health like weakness, pains, diseases.

A great number of environmental problems ... by people.

The rivers are ... because it hasn't rained for a long time in some hot spots of our planet.

Choose ecological problems of our planet.

Choose the word combinations which are good for our environment.