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What is the inert gas, daughter product of the radioactive isotope, K-40?

Hornfels are metamorphic rocks produced at great depths and high temperatures associated with regional metamorphism.

Hotter objects radiate ________ total energy per unit area than do colder objects.

For a radioactive isotope like Uranium-235, what does the 235 indicate?

Hotter objects radiate ________ total energy per unit area than do colder objects.

Which of the following refers to the investigative process by which geologists identify and match sedimentary strata and other rocks of the same ages in different areas?

A ________ is a semiarid, transitional region.

Hotter objects radiate ________ total energy per unit area than do colder objects.

Which best explains the demise of the Farallon Plate?

Which of the following characteristics would suggest recent, fault uplift of a desert mountain range?