Answer Volcanic gases are natural sources of air pollution. Volcanic gas samples

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Answer

Volcanic gases are natural sources of air pollution. Volcanic gas samples are relatively easy to obtain. Volcanic gases are released when pressure drops. Thousands of tons of gases can be released daily by a volcano.


Visualize five, horizontal, sedimentary strata exposed in a cliff or canyon wall identified by consecutive numbers, 1 being the lowest bed (i.e., sedimentary stratum) and 5 being the highest. Which of the following statements concerning the strata are true? Answer Bed 5 is younger than bed 4. Beds 1 and 3 are younger than bed 4. Bed 4 is older than bed 2. Bed 3 is older than beds 2 and 4.

Explanation / Answer

1

Thousands of tons of gases can be released daily by a volcano.

2

Bed 3 is older than beds 2 and 4.

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