Which primary component of clastic sedimentary rocks is not found in unweathered igneous rocks?

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

In general, are there any major differences that you can see? explain

Dna, in the nucleus carries the genetic code for making proteins in ribosomes. in the diagram, b, represents the proteins produced. dna cannot leave the nucleus to carry the genetic information to the ribosome where proteins are produced. how does the genetic code get from the nucleus to the ribosome? what does a represent? now