World Geography
Which among the following statements is correct about Mesa?

It is an elevated area of land with a flat top and sides that are usually steep cliffs
It is a small hill
It is a secluded hollow
It is a narrow pass or gorge between mountains or hills

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

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

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