Complex sentence: The area of the Achanakmar-Amarkantak Biosphere Reserve is considered to be one of the major watersheds of peninsular India-it separates the rivers that drain into the Arabian Sea and the Bay of Bengal.
Split into simpler sentences: The area of the Achanakmar-Amarkantak Biosphere Reserve is considered to be one of the major watersheds of peninsular India. It separates the rivers that drain into the Arabian Sea and the Bay of Bengal.