shell debris 예문

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1. Shell debris ( ammonites, belemnites, nautiloids, bivalves, etc . ) and bioturbation are also present.
2. No casualties were reported, but TV carried footage which showed shell debris on some houses.
3. These bivalves make sticky threads which bind stones and pieces of shell debris into a felt-lined nest.
4. The sand accumulated on the beach is rosy coloured, mainly formed from red coral fragments and shell debris.
5. This prawn can be found on substrates of mud and shell debris, but it appears to prefer sand.