Complex sentence: The Northern jaguar is a population of the jaguar ("Panthera onca") in North America, ranging from the southern part of the United States in the north to the southern part of Central America in the south.
Split into simpler sentences: The Northern jaguar is a population of the jaguar ("Panthera onca") in North America. Its ranges from the southern part of the United States in the north, to the southern part of Central America in the south.