Plant perception (physiology) auxin redistribution occurs in a way to produce differential growth away from gravity. For perception to happen, the plant must sense, perceive and translate the direction of gravity. Without gravity, proper orientation will not occur and the plant will not effectively grow. The root will not be able to uptake nutrients or water, and the shoot will not grow towards the sky to maximize photosynthesis. Plants do not have a brain or neuronal network, but reactions within signalling pathways may provide a biochemical basis for learning and memory in addition to computation and problem solving. Controversially, the brain is used
Artificial nails fitted properly, artificial nails are usually not problematic. However, long term use and poorly fitted nails can seriously damage the nail bed and hamper natural nail growth. The most common problem associated with artificial nails is a fungal infection that may develop between the false and natural nail. When artificial nails are applied to the natural nail surface, minor types of trauma to the artificial nails which can happen from something as harmless as scraping a nail against a firm surface can cause separation of the nail from its nail bed. This allows bacteria and fungus to potentially enter the