List any two major causes other than anthropogenic causes of the loss of biodiversity.
Two major causes (other than anthropogenic causes) for the loss of biodiversity are as follows:
(a) Glaciations and Global warming: The Earth had been through many phases of glaciations and global warming. Mammoths are believed to have existed during the Ice Age. Global
warming led to the end of the Ice Age, which resulted in mass extinction.
(b) Meteor hit: Dinosaurs are believed to have become extinct because of meteor hit.