Do you know why fireflies are lit at night or how do elephants communicate with each other?
In the appendix "Why so?" there will be answers to many questions that you are interested in since childhood, some of which can stupefy
some of your friends.

All pages with questions are full of vivid illustrations to them, brief explanations
and moreover, you can always spy the answers without connecting to the Internet.

As you know, it is more convenient for many to remember the information aloud, so we have the opportunity to listen to the answers in the same way.

We care about the younger generation, that's why in our application your children will never see the advertisement!