$1..............$ is very long lasting metal used in Architectural Sheet Metal Roofing but is toxic to humans. Group of answer choices

a$.$ Zinc

b$.$ Lead

c$.$ Copper

$2.$ Green roofs may $...$

Group of answer choices

a$.$ Generate Electricity

b$.$ reduce building heating and cooling costs

c$.$ Replace Roofing Memberane

$3.$ Wood Shingles will last for $...$

Group of answer choices

a$.15-25$ years

b$.30-50$ years

c$.50-80$ years

$4.$ Roofs with a pitch of $..................$ or greater are referred to as $$steep$$ roofs. Group of answer choices

a$.1$:$12$ to $2$:$12$

b$.2$:$12$ to $3$:$12$

c$.1/2$:$12$ to $1$:$12$

$5.$ Single$-$ply membranes account for roughly $..........$ percent of the North American low$-$slope roofing market. Group of answer choices

a$.35$

b$.50$

c$.75$