surface of Pluto
... that up to 75 percent of the surface of Pluto is both tropical and arctic?
... that up to 75<span id="mwzg" typeof="mw:Entity"> </span>percent of the <b id="mwzw"><a class="mw-redirect" href="./Climate_zones_on_Pluto" id="mw0A" rel="mw:WikiLink" title="Climate zones on Pluto">surface of Pluto</a></b> is both tropical and arctic?