Fill in the gaps.
There are thousands of endangered plant and animal __species_ in the world.
Global _warming__ is caused by a phenomenon known as the greenhouse effect.
The three forms of _fossil__ fuel are oil, natural gas and coal.
Greenhouse _gases__ trap heat in the atmosphere, which makes the Earth warmer.
The Antarctic _ozone__ hole was discovered in 1985.
Each molecule of __carbon_ dioxide consists of one atom of carbon and two atoms of oxygen.
Switching to ___ energy-saving light bulbs is the easiest way to start saving energy.
When we burn fossil fuels, this releases all sorts of gases into the air causing air pollution such as smog.
Climate _change__ is one of the biggest threats we face today.
We cannot see or feel __UV__ radiation, but our skin responds to it by turning darker.
1. How many wheels does a car have? ... - A car has four wheels.
2. How many seasons are there in a year?… — There are four seasons.
3. How many wheels does a bicycle have? ... - A bicycle has two wheels.
4. How many fingers do you have? ... - I have ten fingers.
5. How many letters are there in English ABC? … — There are twenty-six letters.
6. How many letters are there in Russian ABC? … — There are thirty-three letters.
7. How many letters are there in eight? ... - There are fire letters.
8. How many copecks are there in one rouble? … - There are 100 kopecks in one rouble.
9. How many days are there in a week? … - There are 7 days in a week.
10. How many days are there in a year? … - There are 365 days in a year.
11. How many legs do you have? … - I have two legs.
12. How much is 5 + 4? ... - It will be nine.
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