словосочетания со словом афорим

ПОМОГИТЕ

1)Одна мышь биомассой 5 г рождает двух детенышей массой 1 г и 0,5 г .За 3-4 недели выкармливания детенышей молоком их масса становиться 5 г и 4 г соответственно . На основании правила экологической пирамиды определите , какая биомасса зерна необходима самке , чтобы выкормить свое потомство? 2)Сколько требуется растений , чтобы в лесу вырос волк и смог достичь массы 40 кг ? Пищевая цепь : растения -- заяц -- волк .

Supply the correct prepositions where necessary.
She never buys goods … sale prices.
You can try … this coat … the changing room.
She called … a small shop and bought … a dress. It was … the right size and colour and it was not expensive … her. She liked … the dress very much.
Liza Minelli was born … March, 12, 1946, … Hollywood. … her childhood she was interested … film-making, but she especially enjoyed going … MGM Studios and looking … dancers.
They offered to deliver the first lot … four months after they signed the contract and the balance … 22 motors – eight months later. Rossexport guaranteed the delivery … each lot … any delay. Mr. Smith agreed … the terms … the Russian company.
Will you fill … the forms, please? Thank you. The porter will take you up … your rooms … the lift. Here are the keys … your rooms.
I’m waiting … the director. I’d like to speak … him … the offer of Blake and Co.
The price was not attractive … him and he asked the company to give them a discount … the price. Mr. Morris could offer … him only a 2% discount as their goods were … great demand and sold very well … that price. 
I know you are going to spend … your holiday … the coast … the Black Sea. Write me … your holiday when you come back … Moscow.
They wanted to buy 60 motors … the Russian company. Rossexport was interested … selling their goods … Smith and Co and they were going to invite Mr. Garsell, the manager … the company, to come … Moscow to have talks.

в параллелограмме тупой угол равен 110 градусов . чему равен угол( в градусах) между высотами  параллелограмма , проведенными из вершины тупого угла?