Biển càng mặn, cá mập càng ít máu
Lượng máu trong mỗi con cá mập phụ thuộc vào độ mặn của nước biển xung quanh. Tương tự, thể tích các dịch lỏng khác cũng được điều tiết theo môi trường.
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