Complex sentence: Although Mona Ground Iguanas use the whole island as habitat only 1% of the territory located on the southwest coast is suitable for nesting because it contains loose sand and receives direct sunlight.
Split into simpler sentences: Although Mona Ground Iguanas use the whole island as habitat only 1% of the territory is suitable for nesting. Only the southwest coast of the island is used for nesting because it contains loose sand and receives direct sunlight.