List any two major causes other than anthropogenic causes of the loss of biodiversity.

(N/A) Apart from anthropogenic (human-induced) activities,the loss of biodiversity is primarily driven by natural causes. Two major natural causes are:
$1$. Natural Calamities: Events such as volcanic eruptions,earthquakes,floods,and forest fires can cause sudden and massive destruction of habitats,leading to the loss of species.
$2$. Climate Change: Long-term shifts in temperature and weather patterns,such as ice ages or prolonged droughts,can alter ecosystems significantly,making it difficult for certain species to survive and adapt,eventually leading to their extinction.