What are the sources of charge difference across the membrane of axon?

What is the difference between bacterial infections and viral infections?

Compare the composition of the moon's surface with the composition of the earth's surface.

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 ?