Adenine, guanine, cytosine, and thymine are the four nitrogenous bases present in the dna of all organisms. which scientist discovered these bases? rosalind franklin erwin chargaff linus pauling

Forensic nursing is a medical-specialist career that grew out of a response to divorce in society. true false

Florian discovers a rock that is broken into pieces. each piece has several bands. which type of rock does florian predict these pieces will change into when subjected to heat and pressure? igneous magma metamorphic sedimentary

What is the name of the two satelites on mars