Which rna base pairs with the adenine in dna? ?

In DNA, adenine bound to Thymine

In RNA, adenine bound to Uracil

In RNA Adenine bonds to Uracil

Explanation:

In the transcription a ribonucleic acid (RNA) copy of a DNA (deoxyribonucleic acid) molecule is made.

During transcription of DNA, RNA uses the uracil base, it bonds with the adenine DNA nucleotide. Thymine is not used as a base in any RNA nucleotide. Thymine and Uracil are identical ring structures but there is a methyl group on thymine and uracil contains a hydrogen atom.

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

hope this .. .

c.more precipitation,but only when emission levels.