Thursday, August 31, 2017

Some Fact about Egg.

The chicken is one of the first domestic animals, appearing in China around 1400 BC.China produces most eggs, at about 160 billion per year. In the US, about 260 million hens produce more than 65 billion eggs per year. A hen can lay about 250 eggs per year as mentioned in Allamazingfacts

Despite their solid appearance, egg shells have thousands of tiny pores that allow moisture to leave the egg and oxygen to replace it. This meets the needs of the growing chick perfectly - the evaporating moisture makes more room for the growing chick while drawing in the additional oxygen it needs. In the 21 days it takes for a chicken egg to incubate, it will absorb about 8 pints of oxygen and release about 7 pints of carbon dioxide and about 18 pints of water vapor. 

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