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What is the 'black box' on board, and how does it work? After all, what is the 'black box' on the plane? Why is it necessary to search for a plane crash? No matter how big a plane crash, why is there no damage to the 'black box'?

After Facebook and Instagram, avatars can now be placed on WhatsApp profiles as well WhatsApp users can now create an 'Avatar' on their profile.

How to make the child's teeth good and strong? Children's teeth start to change between the ages of 6 and 7. Before that, baby teeth grow, which gradually fall out and new teeth start to grow. In this way, the teeth after the milk teeth are replaced are permanent, and if they are damaged again, there is no possibility of new teeth coming.

Do children have to eat breakfast? There is a Japanese proverb - eat breakfast yourself, share lunch with your friends and give dinner to your enemies. It indicates what the daily food schedule should be. It is said that you should eat full in the morning, half of it in the afternoon is enough and it is better not to eat at night.