poriferans
Any extinct mammal of the clade †Meridiolestida
plural of poriferan
A machine that strips the bark from felled trees prior to sawing into logs
To use or affix by norsel.
熱帯のサンゴ礁では海綿動物が大量の海水を濾過し、栄養塩の循環の維持に寄与している。
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