I have a Science Test Tomorrow and i need help with these questions. Help will be appreciated. 1. Peter the postman rides his bike uphill. a. Peter is an organism. List the features that make Peter an organism. b. When Peter rides his bike up the hill which body systems are working together. c. What measurements can be done on Peter and his riding? The attempt at a solution a. Peter can detect changes, change position or place, get rid of wastes, grow, get food, produce young and respire. b. skeleton and muscular.