Simplify the following text for a Grade 10 native English-speaking person.
Original: He was elected to the National Academy of Science , was awarded the National Medal of Science , and was involved in the development of evolution-based science programs for California high schools , as well as the conservation of rare plants in that state .
Simplified: Stebbins was elected to the National Academy of Science , was awarded the National Medal of Science . He was involved in the development of evolution-based science programs for California high schools , as well as the conservation of rare plants in that state .