Mariana becomes a butterfly

An avid gardener living in the sunny Dominican Republic, Mariana is stumped by a change in her new plant. The plant once grew delicious berries, but now Mariana can't seem to get any more berries to grow. With the help of Mariana's Aunt Leti, an agricultural engineer, Mariana soon discovers the problem: her plant is not well-matched to its new surroundings, and lacks a pollinator. How will Mariana solve this difficulty? With Tía Leti helping her explore the challenges of maintaining balance in natural systems, as well as introducing her to the engineering design process, Mariana soon discovers the sweet rewards of agricultural engineering.