SECURITY SYSTEM BECAUSE IT MONITORS WHAT COMES IN AND OUT.

ZOO FENCE BECAUSE ITS A RIGID OUTER LAYER THAT SUPPORTS THE ZOO.

THE AIR BECAUSE IT FILLS UP THE EMPTY SPACES.

THE SOLAR PANELS BECAUSE IT PRODUCES ENERGY TO THE ZOO.

CUSTODIANS BECAUSE THEY USE CHEMICALS TO BREAK DOWN WASTE.

THE CONCESSION STANDS IN THE ZOO BECAUSE THEY STORE FOOD AND WATER.

THE DIETITIAN BECAUSE THEY PACKAGE FOOD AND DELIVER IT TO THE ANIMALS.

GRASS BECAUSE IT CAPTURES ENERGY FROM THE SUNLIGHT AND MAKES FOOD FOR THE ANIMALS.

THE ZOO TRAIN BECAUSE IT TRANSPORTS PEOPLE AROUND THE ZOO.

THE ZOOKEEPERS BECAUSE THEY PUT TOGETHER FOOD FOR THE ANIMALS.

THE INFORMATION DESK BECAUSE ITS THE CONTROL CENTER.

THE ZOO MANAGER BECAUSE THE MANAGER DIRECTS THE ZOOKEEPERS IN THE ZOO.

THE MAPS IN THE INFORMATION DESK BECAUSE THEY CONTAIN THE INSTRUCTIONS AND DIRECT YOU TO YOUR DESTINATION.