Which of the following statements about chemical properties is true? (S8P1c) A
They can be observed when the identity of a substance changes.

B
They vary based on sample size.

C
They can always be observed without changing the identify of a substance.

D
They are easier to observe than physical properties.

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 ?