Why is the roof of the Hearst Tower designed to collect rainwater? Check all that apply.
A.)to reduce the amount of water dumped into the city’s sewer system
B.)to replace water lost to evaporation in the office air-conditioning system
C.)to add drinking water to the water fountains
D.)to irrigate the plants and trees throughout the building
E.)to humidify and chill the tower’s ten-story atrium