Почему люди радуются когда находят древние книги и берегут их?

Напишите уравнение реакции горения пропана. Расставьте коэфиценты и докажите, что эта реакция окислительно- восстановительная.

вычислите наиболее удобным способом 5+ (-23)+8+(-4)+(-8)+17

ПОМОГИТЕ ПОЖАЛУЙСТА!!!

Прочитайте текст и вставьте слово,которое лучше всего подходит каждому пропуску.

   Patricia Ball is on vacation from work, but she (1)____ not happy.She has only $45. Where can she go (2)____only $45? Nowhere! What can she do with only $45? Nothing! 

   Then she (3)____ an idea. For $45 she can get a tattoo! She (4)____ $45 and gets a small tattoo on her chest. It is a tattoo (5)____ a horse. Patricia likes the tattoo. A few weeks (6)____  Patricia has some extra money, so she gets (7) ____ tattoo. It is a rainbow. Patricia likes the rainbow. She wants (8)____ tattoos. During the next ten years Patricia (9)____ hundreds of tattoos. She gets a Native American onn (10)____ arm. She gets the ocean on her leg, with green plants and silver fish. She gets a jungle on her back, with (11)____trees, orange birds and a blue waterfall. Patricia gets tattoos everywhere on her (12)_____;only her face and neck have no tattoos. Patricia wants more tattoos, but she can`t have them. There is no more space for tattoos! 

Небольшой доклад о Великобритании