world's Christian population
... that the world's Christian population is growing slightly faster than the world's population?
... that the <b id="mwGJo"><a href="./Christian_population_growth" id="mwGJs" rel="mw:WikiLink" title="Christian population growth">world's Christian population</a></b> is growing slightly faster than the <a href="./World_population" id="mwGJw" rel="mw:WikiLink" title="World population">world's population</a>?