The finely divided red, brown, and yellow soil coloring originates by what process?

a. mechanical weathering of the feldspar and micas in granite and ryholite
b. chemical weathering of quartz and feldspar
c. preciptation of iron oxides during the chemical weathering process
d. mechanical weathering of very fine grained blue grey clays

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 ?