mass extinction event of 65 million years ago, in which about 85% of all species on Earth died...
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Subject:
mass extinction event of 250 million years ago, in which about 90% of all species on Earth died...
rhyming words at the end of the lines in a poem. Some common patterns for end rhyme are
...a line of poetry with a pause at the end, sometimes signalled by a punctuation mark, e.g. The...
Subject:
those species that are found only in a particular area or region and nowhere else on Earth.