Why Kangaroos Live only in Australia? – 10 pics

Have you ever wondered why do kangaroos live only in Australia? There are more places with such a climate and conditions. What appears to be an explanation is this: Kangaroos are mammals with a bag (Latin Marsupialia).

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The first mammals appeared in the age of dinosaurs, believe it or not. With the climate change on Earth, the dinosaurs disappeared, while mammals were breeding and evolving differently.

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Mammals with placentas have evolved more rapidly than mammals with a bag. Thus, the marsupials from the many parts of the world were extinct, because they couldn't survive in the struggle with other mammals.

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That, however, did not happen in Australia and South America. Scientists believe that Australia used to be linked with Southeast Asia, probably by a number of islands.

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Marsupials most likely spread to Australia at a time when there was no more placental mammals at all. As they had no rivals, they have evolved and developed in different directions to become what they are today.

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