This worksheet is designed to allow a student to investigate the characteristics of a living thing - a snail. It is based upon the acronym, MRS GREN, which is used to help remember the features of living organisms: Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion and Nutrition.I originally wrote this worksheet for Year 7 students but have used it with year 9s also. It is also good for students who are learning English.Students normally love this activity because it is often t