. . . . . . "It seems obvious that a pig will never give birth to a puppy, but why should that be the case? Variation in Living Things explains the causes and limits of variation in species - such as blood groups and disposition to disease - and why it is so important to their survival. It tackles common confusions about the science and shows how topics are relevant to the reader."@en . "Juvenile works"@en . "Juvenile works" . . . . "Electronic books"@en . . . . "Variation in living things"@en . "Variation in living things" . . . "Looks at the causes and limits of variation within species and why it is important to survival." . . "JUVENILE NONFICTION / General" . . "JUVENILE NONFICTION / Science & Nature / General (see also headings under Animals or Technology)" . . "Variation (Biology)" . . . .