Из-за чего Илья поссорился с князем Владимиром?

Things used to be different. Make sentences used to which show things were different. a. The houses are very expensive. b. The streets are dirty. c. There is so much litter on the streets. d. The car parks are always full. e. There is a lot of traffic on the roads. f. It's noisy at night. g. Andy's changed! He's so miserable! h. And he's really mean. i. He's badly-dressed.

какова роль птиц в цепях питания?

решите уравнение корень квадратный под корнем пять икс минус шесть равно корень из икс минус двенадцать