Construction Causes Major Pollution.

The vast majority of construction's carbon foot print comes from

• aviation ( the airline industry)

• manufacturing of concrete

• organizing carbon negative projects (where carbon is absorbed)

Concrete is the most widely used substance after

• water

• plant materials

• metal

Concrete is found

• Just about everywhere

• in most cities only

• nowhere in civilized areas

Concrete is made from

• limestone only

• sand only

• limestone and sand

_________ heats limestone and sand to make concrete

• a kiln

• the sun

• boiled water or steam

To manufacture concrete, kilns are heated using old tires and low quality fuels . Doing this creates a lot of air pollution.

• True

• False

Concrete production contributes____% to global CO2 emissions annually.

• 1%

• 0%

• 11%

Sand mining can be ..

• environmentally damaging

• helpful to the environment

Drywall is made of

• concrete

• gypsum

• wood

Drywall generally makeup the walls of buildings

• True

• False