List two ideas about why mammoths became extinct?

1. Over-hunting by humans: Humans hunted mammoths for their meat, fur, and tusks. This over-hunting may have been the main cause of their extinction.

2. Climate change: The climate during the Pleistocene epoch was very cold and dry. Mammoths were adapted to this cold climate, but as the climate began to warm up, they were unable to adapt and their numbers began to decline.