Why did the Aztecs of Tenochtitlán build chinampas?

This way, the city of Mexico‐Tenochtitlan became a 'floating' city. The Aztecs built the Chinampas for agricultural production, piling up mud from the bottom of the lake, rich in organic matter and nutrients and protecting it with a fence of wooden stakes.

jupiter is mainly composed of hydrogen and helium just like a star. spectral analysis of jupiter has revealed that in addition to hydrogen and helium, the planet is made of water, methane and ammonia. those elements are in trace amounts. the core of the planet is thought to contain some rock and metallic hydrogen. i hope this will give you the answer to your question! : d

the earthquake in haiti was a magnitude of 7.0 according to the u.s geological survey yet the smaller earthquake in haiti killed more than 200,000 and left more than 1.2 million people homeless. the chile earthquake was a magnitude of 8.8 and 500 times more stronger but chile's earthquake only injured 712 people.