10 Interesting Fact About The human body and how it works

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• Babies have more bones than adults because some bones will join when the baby grows.
• The human brain contains about 100 billion nerve cells.
• Human eyes can distinguish about one million different colors.
• The human body contains enough hydrochloric acid in the stomach to dissolve metals.
• Human feet contain more than 50 different bones.
• Human heart can produce a large enough blood pressure to fire blood as far as 10 meters away.
• Everyone has unique fingerprints, even identical twins.
• Human nails grow about 3 mm every month.
• The human body produces quite hot within one hour to heat half the gallon of water.
• Humans produce about 1 to 2 liters of saliva every day.