Tallest Man in the World

What makes us grow? What affects our height? Is it the food we eat? Or does it depend on our parents and our genes? Maybe taking part in lots of sports activities (like basketball!) makes us grow taller? Actually, scientists have discovered that about 60 to 80 percent of the difference in height between people, is determined by our genes. 20 to 40 percent depends on our environment, mainly the food that we eat.

Now, let's meet the tallest man in the world. His bed is 2.6 meters long. How tall do you think he is?

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