Environmental Science
Our seasons are caused by:

The angle at which sunlight reaches the earth
Only (b) and (c) are correct
The changing distance between the earth and the sun
The length of the daylight hours
All of these

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Environmental Science
The Gulf Coast states are more humid in summer than the coastal areas of Southern California mainly because of the:

Low relative humidity of the air over the Pacific Ocean
Higher water temperature in the Gulf of Mexico
Lower air temperature in Southern California
Higher air temperature in the Gulf States

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