Написать письмо david. 1. what is your favorite activity in school? 2.do you visit school clubs? what are the clubs? 3. what place would you like to visit soon? ​

1. "Carbon calculators" can help you to know how much CO2 is produced by you.
2. Almost one ton of CO2 per person may be produced during a flight across the Pacific Ocean.
3. That can be done by buying energy-efficient light bulbs, refrigerators, and other appliances. By installing solar panels, we can make homes and businesses greener.
4. It may be offsetted by walking, riding bicycles, and driving hybrid cars.
5. This article implies the need  of reducing CO2 levels in the atmosphere.
Because, otherwise it may lead to global warming.

Dear friend, Thanks for your letter. Last time I was in library month ago, I borrowed book by Jane Austin. I really enjoy visiting library, because I can relax and read book in a calm and quiet place. Moreover, you don't have to spend a lot of money on buying books. In library you are able to find books of different sizes and genres: classic literature, dictionaries, scientific magazines. I recommend you to go there and enroll in the library. I hope you'll enjoy it. Looking forward to hearing from you soon, Best regards, *name