put in tables the answer for step $1$ and step $2$:

step$1$:Compare quantitative and qualitative measures of sustainability.$($put in table$)$

step$2$:Compare $$bottom$-$up$$ and $$top$-$down$$ approaches to driving sustainability.$($put in table$)$

step$3$:Examine how different approaches to sustainability drive the construction industry to reduce its environmental impact.

step$4$:Critically evaluate assessment methods and how they aim to overcome the barriers to sustainable construction.