Environmental Science
The main reason why vegetables take longer to cook in boiling water at high altitudes is because:

Saturation vapor pressure decreases with increasing altitude
Water boils at a higher temperature with higher altitude
The temperature of the boiling water decreases with increasing altitude
There is less oxygen in the air at high altitude

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Environmental Science
The albedo of the earth's surface is only about 4%, yet the combined albedo of the earth and the atmosphere is about 30%. Which set of conditions below best explains why this is so?

Low albedo of clouds, high albedo of water
Low albedo of clouds, low albedo of water
High albedo of clouds, low albedo of water
High albedo of clouds, high albedo of water

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