Later that night, after the incident with the prince, back at Malaya's dormitory...
"One of the main issues that past voyagers faced when traveling across the seas was the lack of food and proper nourishment, as well as diseases such as Scurvy. Fifty percent of sailors in the age of sails on Earth died as a result of that disease." Malaya dropped her chalk as she returned her gaze to her two students. "Do you have any questions?"
Rein and Dorris both focused their eyes on her.
"Umm, what is Scurvy disease?" Dorris raised her hands.
"It is a disease due to lack of Vitamin C."
"Vitamin C?" Dorris' eyes were already spinning from confusion. There were so many things she didn't understand right now.
"It means they don't eat enough oranges, potatoes, and peppers," Malaya explained.
"Oh!" Dorris' eyes sparkled.
"What is Earth?" Rein inquired.
"It's an imaginary world I created." Malaya gave a wolfish grin.