Эссе на тему " the most important ecological problems", 90-100 слов

The problem of ecology is very controversial nowadays. There are a lot of different problems that people should solve together: pollution of air, rivers and ocean, deforestation and, of course, one of the most important problem today. It's global warming!  
I am sure, everyone can help to save the environment and nature. Firstly, we should not litter on the streets, throw thing into the water and save the water!
We should not fire in the forests because it is usually the cause of forest fires.
We always must remember about our natute and help it all the methods we can!

100 words!

1. I have eaten my breakfast. Я съел свой завтрак

2. We have drunk water. Мы выпили воду

He has brought them some meat and vegetables -  он принес им немного мяса и овощей

3. You have put the dishes on the table. Ты положила тарелки на стол

4. They have had tea. Они выпили чай

5. She has taken the dirty plates from the table. Она убрала грязные тарелки со стола

6. The children have put on their coats. Дети одели свои пальто

7. The pupil have written a dictation. Ученики написали диктант

8. My friend has helped me to solve a difficult problem. Мой друг мне решить сложную проблему

9. I have learnt a poem Я выучил стих

10. She has told them an interesting story.  Она рассказала им интересную историю

11. Kate has swept the floor. Кэ подмела пол

12. The waiter has put a bottle of lemonade in front of him. Официант поставил перед ним бутылку лимонада

13. Susan has made a new dress for her birthday party. Сьюзан сделала новое платье для вечеринки по случаю дня рождения

14. She has opened a box of chocolate. Она открыла коробку шоколада

Present Perfect:

I have done my homework already.

He hasn't done his homework yet.

I have never met such a nice person.

Present Simple:

I go to school every morning.

We usualy have tea after breakfast.

She works as a shop assistant.

Present Continuous:

I am listening to music now.

We are watching TV right now.

Peter is playing football now.

Past Simple:

I saw him yesterday.

They painted the house two years ago.

Nick visited his grandmother last week.

Past Continuous:

I was playing tennis when he called me.

She was writing a letter yesterday at 5 o'clock.

We were cooking dinner when he came.

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