a heterogeneous mixture with a stable distribution of a liquid in another liquid, for example,...
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extremely hard, calcium-rich substance which covers the crown of the tooth.
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mass extinction event of 65 million years ago, in which about 85% of all species on Earth died...
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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
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