Last Updated：2025/12/04
During the larval stage, the mollusc's shell sac secretes layers of calcium carbonate that build its protective shell.
See correct answer
During the larval stage, the mollusc's shell sac secretes layers of calcium carbonate that build its protective shell.
音声機能が動作しない場合はこちらをご確認ください
Edit Histories（0）
