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In fact, situations such as these are happening throughout Mexico City, where long-term extraction of groundwater has caused significantland subsidence and associated aquifer-system compaction, which has damaged colonial-era buildings, buckled highways, and disrupted water supply and waste-water drainage.
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shared power between the state and national governments
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a. learning how to speak English
The UN uses global food systems to offer aid to poor countries.
I assume you mean the Golden Islamic time from 8th to 13th century!
During this time, Islamic scholars were among the world's best. Among others they:
made achievements in maths (which is why algebra and algorithm are arabic words)
worked on scientific experiment as a technique to pursue knowledw
had some advancements in astrophysics (first reference to Andromeda Galaxy!
had a lot of advances in medicine, such as study of blood circulation, and of nervous system
