"Why is the sea salty?"

The book of the popularizer of science Tatyana Pirozhenko "Why is the sea of ​​salty?" tells what is most on Earth-about water, about why it is salty, why it is impossible to drown in salty water, how salt is extracted from sea water and make it fresh from it, whether it is possible to drink salty water and much, much more.. All this is accompanied by 4 excellent experiments that every child can do.

for primary school age.