Environmental Science
As the air temperature increases, with no addition of water vapor to the air, the dew point will:

Increase
Decrease
Increase and become equal to the air temperature
Remain the same

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Environmental Science
Biogas is composed of

methane, carbon dioxide, nitrogen and sulphur
ethane, carbon dioxide, nitrogen and hydrogen
methane, carbon dioxide, nitrogen and hydrogen
carbon dioxide, nitrogen and hydrogen

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

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

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