Ответ:
Emissions from stationary sources make up annually about 50–55% of national emissions into the air from stationary sources, amounting to more than 4 thousand tons. Of these, sulfur dioxide is 200–600 tons, carbon oxide - 1000–1500 tons, nitrogen oxide - 120– 300 tons. Automobile emissions annually amount to about 150–180 thousand tons, including carbon oxide - 120–130 tons, nitrogen oxides - 10–28 tons and hydrocarbons - 20–22 tons.
The main sources of water pollution are industrial and municipal enterprises of the cities of Vladikavkaz, Beslan, Alagir and Mozdok.
Of all industrial enterprises, the most significant "contribution" to the pollution of water bodies is made by the Electrozinc plant. It contains zinc, lead, copper, iron, arsenic, and petroleum products. Following the Electrozinc plant, Pobedit, Gazoapparat, and some transport enterprises dump their wastewater into the Cambileevka river.
Думаю, все верно:)
1) Maths
2) History
3) Technologies или Informatics
4) Physical Education (PE)
5) Physics (не совсем понял про plants, так как это Biology)
6)Geography
2.I agree.I think math is boring.
3.I don't agree.I think the history is very interesting.
4.I agree. The Manchester United is the best team in Europe.
5.I agree.Mushrooms are very delisious.
1.Tom hasn`t created a personal webpage.
2. I have played some new online games.
3. She has joined an online chess club.
4. Fifty people has logged on to website.
5. I haven`t messeged my friends today.
6. Your grandma hasn`t used a computer.
7. They hasn`t chatted online before.
8. We`ve visited your webcite.
Если что PP формулируется как Have/has + глагол в 3й форме (ed на окончании).
<span>1)Yesterday at 3 PM Anna played the flute, and her brothers played the violin.
2) while Fred ran the vacuum, his wife included a washing machine.
3) while I bought vegetables, I talked to the seller of vegetables and fruits.
4) My dad repaired the Central heating yesterday at 7 PM.
5) Who played tennis when you entered the room?
6) Little Tom was looking at a map of Europe, when his sister told him about England.
7) What did you do when grandma was baking pancakes?
8) At a time when children listened to music, their parents watched the sunrise.</span>