Building on greenfield sites will often cause traffic congestion and increased commuting into urban areas

Building on the site of an old carpet factory is the development of which type of site?

Brownfield sites are derelict and unpleasant to look at. What key term refers to this unpleasant appearance?

Developments on brownfield sites are likely to include smaller houses or apartments blocks.

It is more environmentally friendly to redevelop greenfield sites than brownfield sites.

Housing is sometimes built on areas of green space, such as playing fields, within towns. Would this be an example of building on a brownfield or a greenfield site?