What can scientists learn from the rate at which radioactive elements decay?

a) the difference between molds and casts

b) the relative age of rock layers

c) a rock’s actual, or absolute, age

d) where one soil horizon ends and the next begins
! meh!

the answer is C

Explanation:

From the rate at which radioactive elements decay, the rock's actual, or absolute age can be determined. Using the half-life of the material, we cancalculate using first-degree order equation the age of the rock. The ratio of the original substance to the remaining substance is determined through the half-life.

the answer is the first option

explanation:

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