Which of these organizations acknowledges that the threat to wildlife and biodiversity is greater today than ever before ? a. convention on biological diversity b. the fans at convention c. world trade organization d. convention on international trade in endangered species

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]