| When John was six years old he hammered a nail into his favorite tree to mark his height. Ten years later at age sixteen, John returned to see how much higher the nail was. If the tree grew by five centimeters each year, how much higher would the nail be? |
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Did you know that milk is just filtered blood that female mammals create to provide vital nutrients to their babies? And yes, that even includes cow milk, the one we all buy at the grocery store. The cocktail is composed of water, sugar, fat, and protein, that are extracted from the mom’s blood by her mammary glands. Watch this video by the good folks over at Minute Earth to learn more about how milk is created!
