What knowledge is radiometric dating based upon?

A.
the rate of decay for certain isotopes

B.
the name of the rocks

C.
the weight of the samples

D.
the sequence of layers in the rocks

Question

What knowledge is radiometric dating based upon?  
 
 

 
 

  

  A. 
  the rate of decay for certain isotopes   
   

 
 

  

  B. 
  the name of the rocks   
   

 
 

  

  C. 
  the weight of the samples   
   

 
 

  

  D. 
  the sequence of layers in the rocks

anonymous · Answer

b

anonymous · Answer

ok thx, do u think u could help me with 1 more question?

anonymous · Answer

if so then here is the question: For which of the following examples would carbon-14 dating be appropriate for dating?  
 
 

 
 

  

  A. 
  6,000-year-old seeds from an ancient culture   
   

 
 

  

  B. 
  a 65-million-year-old dinosaur fossil from China   
   

 
 

  

  C. 
  mineral formations in caves that are a million years old   
   

 
 

  

  D. 
  90,000-year-old rocks in the Grand Canyon

anonymous · Answer

I got to say B

anonymous · Answer

on ur first question it is actually A

anonymous · Answer

for the number 2 it is a also