Kerbside recycling refers to the collection of recyclable waste such as plastics, glass, paper or metals, either from a box, bag or bin.  This material is transported by a waste collection vehicle to a materials recovery facility (MRF) for separation and processing, to be manufactured into new products. 

A keystone species is a living organism that plays a critical role within its ecological community.  The addition or loss of a keystone species can significantly impact the abundance of other species living in the same environment.

The Kyoto Protocol is a United Nations initiative that was established in 1997 as a global commitment to reduce greenhouse gas emissions, in order to control global warming.  Australia officially signed the Kyoto Protocol agreement in 2008.  The protocol was amended in 2012 to include legally binding limitations/reductions for greenhouse gas emissions in developed countries from 2013-2020.