Green Roofs are a form of Urban Greening and has several benefits. Which Effect below is NOT one of the benefits/purposes of Green Roofs?

Green Roofs: A Sustainable Solution for ...
a

creates a habitat for birds and insects
b

provides an excellence source of farmland
c

absorbs a great deal of rain water, to prevent flooding or unnecessary runoff
d

absorbs Carbon Dioxide and gives off Oxygen

1 answer

b - provides an excellence source of farmland