aji bns
[1] Australia's plants and animals are probably the
closest things to alien life-forms that you are ever
likely to encounter on Earth. The first naturalists
to investigate them were astonished by what they
some 5
found. The swans there were black and
mammals were found to lay eggs. It really was
an upside-down world, where many of the larger
animals hopped, where each year the trees shed
their bark rather than their leaves, and where the
clock
“pears” were made of wood.
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2 Australia has been separated from other continents
for at least 45 million years. On this point, Australia
is clearly different from the other continents, which
have been able to exchange various species at different
times linked by natural bridges of land. Its plants and 15
animals have taken their own separate and unique
evolutionary journey. This is the very reason why
Australia has one of the world's most unusual natural
environments.
