221 Facts Tell Me Why

221 Facts Tell Me Why221 Facts Tell Me Why is a storehouse of curious facts about the world. The collection will encourage children to go and explore knowledge out there in the world.✨📚

Why do airplanes (aeroplanes) have ‘black boxes’?

Black boxes are actually electronic flight recorders — one stores cockpit audio recordings and the other stores airplane’s instrument data. In times of a plane crash, these are sent to labs for analysis. These are the most important and crucial part of any commercial plane or corporate jet. They are normally put in the tail

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Why do we lose hair from our head, but not from the rest of the body?

We lose hair from both our heads as well as bodies throughout our life. The only difference is in the quantity. The loss from our body is barely noticeable because hair is miniaturized, very small and not very dense. Also, it gets replaced quite quickly. So, the loss is not felt. However, loss of hair

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Why is it important to protect the ozone layer from depletion?

The ozone layer is the protective covering around the earth. It is a natural layer of gas in the atmosphere that protects us and all living things from the Sun’s harmful and strong ultraviolet radiation. Not only does this harmful radiation causes damage to human health, but also it results in damaging other life-forms. It

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Why does cancer treatment cause hair to fall out?

Cancer treatment involves chemotherapy. The job of chemotherapy agents is to target the rapidly growing cells, specifically of those in the tumour. However, the hair follicle, another very active structure that has some of the fastest growing cells in the body, is also unfortunately targeted in the treatment. Chemotherapy destroys not only the tumour cells

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