Which two types of rna pair up using a codon-anticodon link?

Zoo geographic regions are characterized by the presence of specific groups of animals these regions are determined by the taxonomic or phylogenetic relationships of animals. the map shows the zoogeographic regions proposed by the naturalist alfred russel wallace in 1876. the similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations ?

How do ratio scale and diagrammatic scale work

Adding more tributaries to a local river basin can have what effect?