1.В шести пронумерованных колбах находятся аммиак,углекислый газ,кислород,водород,хлор и азот.Как идентифицировать эти вещества?

выявить какую роль формирование Северной Америки играют климатообразующие факторы

Помогите пожалуйста.

допоможіть написати вірш про числівник

ПЕРЕВЕСТИ ТЕКСТ

Then try to get information about the museum you think might be interesting for you. Find a brochure or explore the museum's website to learn about the permanent and special exhibitions, opening times, admission fees and discounts. More than half of museums are free to the public. It means people don't need to pay. Of those that charge fees, 58.7 percent have free days.
At the museum
Find the information desk and ask what exhibitions are on. When you are in the hall, ask if you can touch the exhibits.
Keep the visit simple and don't try to see everything. It could be better to come again one day. You should try to get to the how and the why of things. Take a break if you feel tired.
After the visit
Share your experiences with friends and relatives. Think if it has helped you find answers to the questions you came with or make new discoveries. Faith Lapidus: Thank you very much, Mario.

Упростите запись

а)+(-2,4) ; +(+0,6); +(-5\7)
Б) -(+1,7) ;     -(-8,5);    -(- 2\9)