The diagram shows the structures of four similar limbs in marine animals. Based on limb structure, which two species are most closely related? A. whale
B. shark
C. dolphin
D. Penguin

How does a gymnosperm prevent itself from pollinating the same tree

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 ?

What is the primary function of the nervous system?