2007, James Shipman, Jerry Wilson, Aaron Todd, An Introduction to Physical Science: Twelfth Edition, pages 106–108:
Heat and temperature, although different, are intimately related. [...] suppose you added equal amounts of heat to equal masses of iron and aluminum. How do you think their temperatures would change? You might be surprised to find that if the temperature of the iron increased by 100 C°, the corresponding temperature change in the aluminum would be only 48 C°.
2008, John Greer, John Foerster, George Rodgers, Fixos Paraskevas, Bertil Glader, Daniel Arber, Robert Means Jr, Wintrobe's Clinical Hematology: Volume One: Twelfth Edition, page 141:
2009, Robert Crichten (editor), Iron Metabolism: From Molecular Mechanisms to Clinical Consequences: Third Edition, page 17:
However, by around 1200 BC the ability to heat and forge another metal, iron, brought the Bronze Age to an end. Thus began the Iron Age, when iron replaced bronze in implements and weapons.
2010, Pierre Cornelis and Simon Andrews (editors), Iron Uptake and Homeostasis in Microorganisms, page 17:
Haem is ubiquitous, abundant and necessary for energy metabolism. Most bacteria have a haem biosynthesispathway, but nevertheless, since haem is a major source of iron (an essential metal), microbes take up exogenous haem to retrieve iron.