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

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

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Environmental Science
Which of the following helps to explain why even though northern latitudes experience 24 hours of sunlight on June 22, they are not warmer than latitudes further south?

Solar energy is used to melt frozen soil in the northern latitudes
Some of the sun's energy is reflected by snow and ice in the northern latitudes
All of these
Increased cloud cover reflects solar energy in the northern latitudes
Solar energy is spread over a larger area in northern latitudes

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