Помгите пожалуйста) основание прямой призмы-прямоугольный треугольник с катетами 6 и 8 см. найдите площадь боковой поверхности призмы, если ее наибольшая боковая грань-квадрат.

Опишите строение головного мозга земноводных.

VIII. Выберите один правильный вариант ответа. 1. I understand that you are busy now. (Must, Should, Do…have to) … I phone later? 2. The swimmer pulled together all his efforts and (could, might, was able to) … get out of the whirl. 3. Shakespeare (must, could, can’t) … have been to the USA because it had not been founded by then. 4. I think that you (ought to, can, have to) … help this old and miserable man. 5. My niece (can, might, should) … visit us this summer. 6. We (must, can, could) … go to Venezuela for our holidays. What do you say? 7. For changing over the trains you (need to, is to, ought to) … buy another ticket. 8. With new technology you (should, can, might) … cut communication costs considerably. 9. You (could stay, could have stayed, needn’t have stayed) … at my place when you visited London. Why didn’t you do it? 10. Your hands are full. (Shall, Will, Should) … I help you?

ПОМОГИТЕ ПЛИЗ!!!!

Брюки дороже рубашки на 20% и дешевле пиджака на 46%. На сколько процентов рубашка дешевле пиджака? 

Опишите процесс размножения и развития люгушки. Укажите сходства в размножении земноводных и рыб.