D. Green roofs can be expensive to install.
While there may be various challenges associated with green roofs, including maintenance and initial costs, the expense of installation is a widely recognized challenge.
Which of the following is a challenge when implementing green roofs?
A. Green roofs need to be watered by hand constantly.
B. Green roofs temporarily increase air pollutants.
C. Green roofs do not last very long.
D. Green roofs can be expensive to install.
1 answer