Complex sentence: India hosts more than five hundred wildlife sanctuaries and thirteen biosphere reserves, four of which are part of the World Network of Biosphere Reserves; twenty-five wetlands are registered under the Ramsar Convention.
Split into simpler sentences: India hosts more than 500 wildlife sanctuaries and 13 biosphere reserves, four of which are part of the World Network of Biosphere Reserves. Twenty-five wetlands are registered under the Ramsar Convention.