MRS GRENMovmentRespirationSensitivityGrowthReproduceExcreteNutrition
they speak french
the inhabitants could have special adaptations, such as fish have gills that allow them to breathe under water.
Here are some: Growth. Ok, crystals and stalactites can grow bigger too, but living organisms develop, i.e. they change and different parts become specialized as they grow. Respiration, meaning...
Up til now, no life has been observed anywhere except on earth, so no comparison is possible yet.