Answer:
Nervous system: 3
Excretory system: 1.
Kidney: 2.
Respiratory system: 3.
Explanation:
Nervous system: Transmits nerve impulses to parts of the body.
Excretory system: Fluid waste that gets removed from the body.
Kidneys: A bean shaped organ that filters and transmits urine to the bladder, which transports out of the body.
Respiratory system: Brings oxygen to the lungs, and exhales carbon dioxide and waste materials.
