Environmental Science
The sun emits its greatest intensity of radiation in:

The ultraviolet portion of the spectrum
The infrared portion of the spectrum
The x-ray portion of the spectrum
The visible portion of the spectrum

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Environmental Science
Our seasons are caused by:

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

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Environmental Science
What is the cause of the Exxon Valdez?

a plane which crashed and caused death of human life
a ship which wrecked on the coast of India
none of these.
Oil Tanker which sank in 1989 along the coast of Alaska and marine life seriously affected.

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