How has the Earth and life on it changed? What is a living fossil? Why did thedinosaurs become extinct? Extinctions of Living Things looks into the evolutionof ... » 

How has the Earth and life on it changed? What is a living fossil? Why did thedinosaurs become extinct? Extinctions of Living Things looks into the evolutionof living things and the disappearances of species the effect humans have onextinctions and how modern scientists are striving to protect threatenedspecies. Look into catastrophic ecological changes that blitzed species studyfossils of giant sea creatures judge if we are to blame for the disappearanceof the dodo and assess if dinosaurs are still alive today. Life on Earth isconstantly changing. It has been doing so for as long as we know and far beforehumans were here. Through the use of detailed case studies and scientifictheories the books in the Timeline Life on Earth series discuss how changesare studied what the evidence reveals and how such changes have had andcontinue to have an impact on Earth. «