Environmental Science
Euro II standard refers to _________

increasing carbon content in fuel
Lowering sulfur content in fuel
Increasing sulfur content in fuel
Lowering carbon content in fuel

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

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

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