Humans Facts

 Hi, I am going to tell you some facts about humans.

. Sixty-Six million years ago, there were things called Homo sapiens, they are made of not only made and used stone tools, but they also specialized them and made a variety of smaller, more complex, refined and specialized tools including composite stone tools, fishhooks and harpoons, bows and arrows, spear throwers and sewing needles. Homo sapiens means wise man in Latin. Homo sapiens is also known as archaic humans. now there's humans witch is now us. Humans hearts beats about 100,000 times a day. if your lung is healthy then it will be pink, and if it's a smoker's lung then it would be black or brown telling from the colour. Your highest blood would be your kidney and your strongest muscle would be your tongue. and talking about muscle there are 600 muscles in your body, The three main types of muscle include skeletal, smooth and cardiac. The brain, nerves and skeletal muscles work together to cause movement – this is collectively known as the neuromuscular system. Skin is the largest organ in our body, made up of several different parts, including water, protein, lipids (fats), and different minerals and chemicals. Throughout your life, your skin will change, for better or worse. Your skin regenerates itself approximately every 27 days.