 What central difference between the planets Gloryanna and Mypore is most important to the story? Why is this significant to Hannah and the narrator?
Captain Hannah climbed painfully down from the Delta Crucis , hobbled across the spaceport to where Beulah and I were waiting to greet him and hit me in the eye. Transshipped seeds invariably failed to germinate, which explained its rarity. But when I offered them a sizable piece of cash plus a perpetual share of the profits for letting us take a load of marocca plants to Gloryanna III, they relented and, for the first time in history, gave their assent. Gloryanna III is almost a twin to Mypore II. "Well," he said, "I got into parking orbit around Mypore without any trouble. And by the time I had lined up for Gloryanna and Jumped, I figured, like you said, that the trip would be a cakewalk. So I lined up the Delta Crucis perpendicular to her direction of motion, put a once-every-twenty-one hour spin on her to match the rotation rates of Mypore II and Gloryanna III, and uncovered the view ports to let in the light. It gradually brightened until 'noon time', with the ports pointing straight at the light source, and then dimmed until we had ten and one-half hours of darkness. "Oh," said Captain Hannah in quiet tones of controlled desperation, "it was very simple. And because somehow we had picked up half of the plants in the northern hemisphere of Mypore and the other half in the southern hemisphere, it turned out that half of the plants had a sinistral corkscrew and the other half had a dextral.
 Gloryanna has outlawed and eradicated the marocca plants, while Mypore continues to cultivate the plants. Hannah and the narrator think they will be able to make an enormous profit by transporting and selling the plants to Gloryanna.
 Mypore has outlawed and eradicated the marocca plants, while Gloryanna continues to cultivate them. Hannah and the narrator think they will be able to make an enormous profit by transporting and selling the plants to Mypore.  Gloryanna has outlawed and eradicated the marocca plants, while Mypore continues to to cultivate the plants. Gloryanna’s population is sick of making treks to Mypore just to purchase marocca, so the narrator and Hannah hope to capitalize on their desire by creating a shipping line between Gloryanna and Mypore.  Gloryanna has outlawed and eradicated the marocca plants, while Mypore continues to to cultivate them. Gloryanna’s population is sick of Myporians trying to sell marocca on their planet, so the narrator and Hannah hope to capitalize on the issue by bringing them to Gloryanna’s black market.  Gloryanna has outlawed and eradicated the marocca plants, while Mypore continues to cultivate the plants. Hannah and the narrator think they will be able to make an enormous profit by transporting and selling the plants to Gloryanna.