Что такое экологический след (ЭС) жителя Земли? Как он рассчитывается? Как в настоящее время соотносится экологический след среднего

1.       The Volga is the longest river in Europe. 2. History and Literature were my favourite subjects at school. 3. What is the nearest way to the Drama Theatre? 4. Butter and cheese are made of milk. 5. Usually I get up at 7 o'clock in the morning. 6. Rostov is situated on the Don. 7. Will you have a cup of tea? 8. What a good friend you are! 9. We shall go to the cinema next week together with the Petrovs. 10. This is a book, the book is very interesting. 11. Do you see the sun in the sky today? 12. He is an engineer by profession.