Предмет: Биология, автор: minlien1

приведи примеры растительных индификаторов и как они меняют цвет в зависимости от среды

Ответы

Автор ответа: dasaromaniko

0

Ответ:

Индикаторы - это вещества, которые изменяют свой цвет в зависимости от среды раствора. Значит в плодах растений, листьях и цветах содержатся природные красители (пигменты), которые под действием щелочных растворов меняют свой цвет на синий или фиолетовый, а от действия кислот становятся красными

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AT THE SUPERMARKET

Nowadays more and more supermarkets appear in our cities. They are called self-service shop. Why do people like shopping in this self-service shop? There are three main reasons for this: it doesn't take them much time, there is a wide choice of all possible products in this shop and the prices are not very high.

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All kinds of cereals you can buy at the grocery aisle: oatmeal, millet, rice, buckwheat and pearl barley. They also sell macaroni, vermicelli and noodles. There you can also buy vegetable oil, spices, flour, potato flour, peas and some other products.

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