Phenotypic plasticity refers to the ability of an organism to change its physical traits in response to environmental conditions. This adaptability allows species to survive and thrive in varying habitats by altering characteristics such as size, shape, or color. For example, a plant may grow taller in search of sunlight when shaded by other vegetation. This phenomenon is crucial for many species, including animals and plants, as it enhances their chances of survival and reproduction. Factors influencing phenotypic plasticity include temperature, nutrient availability, and predation. Understanding this concept helps scientists study evolution and ecological dynamics.