Environmental Science
Our seasons are caused by:

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

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Environmental Science
The most important reason why summers in the Southern Hemisphere are not warmer than summers in the Northern Hemisphere is that:

The earth is farther from the sun in July
Over 80% of the Southern Hemisphere is covered with water
The sun's energy is less intense in the Southern Hemisphere
The earth is closer to the sun in January

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