Which factors involving the activities of people are a threat to biodiversity?

Explanation:

Overexploitation of a species. Take elephants for example. Hunters hunt them down for ivory. Say that there was a disease going around elephants, that is incredibly deadly. Take Bobby the elephant. Bobby the elephant is one of the few that has natural immunity to the virus, and if he were to reproduce he could help save the elephant population. If Bobby was hunted down before he reproduces, the population of elephants are put in danger. Also killing a large portion of a species will make it so that the animals in that species have limited mating partners, which can restrict biodiversity

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)]