World Geography
Which of the following Isthmus is located in the Malay Peninsula?

Isthmus of Kra
Isthmus of East Falkland
Madison Isthmus
Isthmus of Avalon

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World Geography
The relative abundance of dissolved salts in seawater in descending order is as follows

chlorine, sodium, sulphate, magnesium, calcium, potassium
chlorine, magnesium, calcium, sodium, potassium, sulphate
chlorine, sodium, magnesium, calcium, potassium, sulphate
sodium, chlorine, magnesium, potassium, sulphate, calcium

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