Environmental Science
Average total rainfall is 100 - 150 cm in __________ , located in Australia, South America and Africa.

chaparrals
deciduous forest
tropical savannas
temperate forest

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Environmental Science
Much of Tibet lies at altitudes over 18,000 feet where the pressure is about 500 mb. At such altitudes, the Tibetans are above roughly:

10% of the air molecules in the atmosphere
75% of the air molecules in the atmosphere
25% of the air molecules in the atmosphere
50% of the air molecules in the atmosphere

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