(1)The green purposes are—
(a)the reduction of greenhouse gas emissions;
(b)the advancement of efficiency in the use of natural resources;
(c)the protection or enhancement of the natural environment;
(d)the protection or enhancement of biodiversity;
(e)the promotion of environmental sustainability.
(2)In this Part, “greenhouse gas” has the meaning given by section 92(1) of the Climate Change Act 2008.