Through the course of time, scientists have tried to explain why certain mammal families evolved to be very large, while others remained tiny. An international group of scientists including Monash University's Dr Alistair Evans proposed a new theory explaining the diversity of mammal sizes - from the Etruscan shrew which weighs around two grams, to the blue whale which clocks in at almost 200 tonnes. Surprisingly, baby weight relative to adult body mass is the ...
via Medindia Health News
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Lake forest health and fitness http://healthandfitness1blog.blogspot.com/2013/06/why-certain-mammals-are-and-some-are.html
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