Unlike DNA, RNA O contains uracil.
contains thymine.
O contains deoxyribose.
is double stranded.

What best explains the inability for life to exist in earth early atmosphere

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist

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 ?