Complex sentence: For example, cheetahs have been on Earth for 800,000 years, yet all cheetahs living today are descended from one or two females that lived about 10,000 years ago.
Split into simpler sentences: For example, cheetahs have been on Earth for 800,000 years. Yet all cheetahs living today are descended from one or two females that lived about 10,000 years ago.