Which statement describes a chemical property of matter? The density of ice is 0.4 g/ml.
The boiling point of ethanol is 78.4 °C .
Rust is a flaky material with an orange-red color.
Sodium is a very reactive element that combines easily with nonmetals.

Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .

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 ?

The arrows indicate the direction of wind flow. which place experiences monsoons?