Homework Help: science

Posted by Angie on Saturday, April 4, 2009 at 9:03pm.

Which statement best explains why dating geologic materials from the Quarternary Period uses a different radioactive isotope than for materials from the cambrian Period?

a. all rocks contain radioactive substances.

b. some isotopes decay faster than others.

c. not all isotopes form stable decay products

d. the decay of atoms occurs as a random event

i think it's b..

science - DrBob222, Saturday, April 4, 2009 at 10:36pm
I think you are correct.
Statements b,c,and d are correct but only b answers the question.
science - Angie, Saturday, April 4, 2009 at 10:40pm
thanks

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