Cell communication occurs among the cells in a multicellular organism. For each of the 3 examples of cell-to-cell communication, describe the communication that occurs and the types of responses that result from this communication

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 ?