Mr ABBOTT (Warringah—Leader of the Opposition) (14:10): My question is to the Prime Minister. I remind her of the Treasurer's statement in the House yesterday that: … one of the foundations of growth in the 21st century is putting a price on carbon … If pricing carbon is the key to unlocking growth, why does the government's own modelling show that her carbon tax reduces GDP growth every year, to at least 2050, by a cumulative reduction of over $1 trillion?