Which is younger – rock unit X or B?

What will be an ideal response?


B is younger, otherwise it could not include pieces of X, which must have formed first.

Environmental & Atmospheric Sciences

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What is the problem with using wood-block-bathtub experiments to explain the isostasy of Earth's crust?

A) It only works for sections of Earth's crust less than 8 km thick. B) It only works for sections of Earth's crust greater than 80 km thick. C) Wood is not a reasonable approximation for crust behavior. D) Bathtub water does not behave like the mantle.

Environmental & Atmospheric Sciences

Which of the following cloud types most likely forms in an unstable atmosphere?

A. stratus B. cirrostratus C. cumulonimbus D. nimbostratus

Environmental & Atmospheric Sciences

Air pollution has only become an important urban problem in the last 75 years

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Which of the following is the SI unit of radiation activity?

A) the becquerel B) the curie C) the millicurie D) the roentgen

Environmental & Atmospheric Sciences