World Geography
The highest mountain peak of Oceania is

Mt. Kosciusko, Australia
Mt. Cook, South Island (New Zealand)
Puncak Jaya, Indonesia.
Mt. Victoria, Papua New Guinea

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

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

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