Read the text and do the task. Tsunamis are a series of waves in the ocean that create surges of water. These walls of water can reach up to 100 feet high and cause widespread destruction when they reach shore. Earthquakes on the sea floor are the usual cause of tsunamis. When the ocean floor at a plate boundary raises or falls, it displaces water and sends rolling waves that become a tsunami. Around 80 percent of tsunamis happen in the so-called "Ring of Fire" in the Pacific Ocean. This is a volcanically active area were tectonic plate shifts and earthquakes are common. Underwater landslides and volcanic eruptions can also start tsunamis. In Earth’s ancient past, tsunamis were caused by a meteorite crashing into the ocean. People’s best defense against tsunamis is early warnings that allow people to evacuate areas near the ocean.

Answer the questions using appropriate words.
1. What do these numbers 80 mean in the text?
2.What do these numbers 100 mean in the text?
3.Where most causes tsunamis?

ЭТО СОР ​

1. The sun has not risen yet, but the sky in the east is getting lighter every minute.

2. I saw you walking along the street the other day with a heavy bag.

3. I have not read the newspaper today.

4. It is very late, and trams have stopped running: we must find a taxi to get home.

5. How many times have you been to St. Petersburg?

6. At last I have trans­lated this article: now I shall have a little rest.

7. We went to the country yesterday, but the rain spoilt all the pleasure.

8. My watch was going in the morning, but now it has stopped.

9. The lecture has not begun yet and the students are talk­ing in the classroom.

10. She has just gone out.

11. She left the room a moment ago.

12. We have not solved the problem yet.

13. When did it all happen?

14. The morning was cold and rainy, but since ten o'clock the weather has changed and now the sun is shining brightly.

15. Show me the dress which you have made.

16. Oh, how dark it is! A large black cloud has covered the sky. I think it will start raining in a few minutes.

17. Oh, close the window! Look, all my papers have fallen on the floor because of the wind.

18. When did you open the window? — I opened it ten minutes ago

Удачи в учёбе!)

Some people say that damage to the environment is the biggest problem facing the world. However, other people say that there are other problems that are more important.

Some people think that environmental problems are the most dangerous whereas others don’t agree.

I think that nowadays environmental catastrophe is the biggest threat. First of all, global worming can bring us a lot of troubles. If the ice melts, a lot of countries will be flooded. Second, Ozone holes can cause the death of a lot of lands. Also bad food, air and water can be the reason of various diseases.

At the same time there are people who say that overpopulation, lack of food and nuclear war can be even more dangerous.

In my opinion these people have a point. These threats can kill our planet too. Nevertheless, they are easier to control than environmental problems. Nuclear moratorium, new technologies allow us to solve these problems.

In conclusion I'd like to say that if we weigh all the facts that say that danger to the environment is the biggest problem against the ones that support other threats, we'll see that the facts that support the statement outweigh those against.

вот это все - формат ЕГЭ, не знаю, подойдет ли(