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حيوان البيروسوم

للوهلة الأولى قد تعتقد أنه مجرد كيس بلاستيكي كبير لكنه في الحقيقة عبارة عن أقرب ما يكون الى دودة بحر كبيرة مفرغة من الداخل…. تقوم بترشيح الماء (تصفيته) و التغذي على الكائنات الدقيقة

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