As the members of a given generation age, their instinct of social conservation becomes stronger, which inevitably and necessarily brings them into conflict with the normal attribute of youthâinnovation. Other important theorists of the 19th century were John Stuart Mill and Wilhelm Dilthey.
Plants require more than just water and sunlight to grow. They also require many nutrients found in the soil. One of the most important nutrients required for plant growth is nitrogen. Nitrogen is used to build plant proteins and nucleic acids, including DNA.
What role does nitrogen play in plant growth and yield? Nitrogen occurs in the chlorophyll of plants and is responsible for vegetative. growth. The leaves of plants that receive sufficient nitrogen have a dark, blue-green colour, which promotes photosynthesis. Photosynthesis is the process by which light energy is intercepted by plants. and stored in the form of starches and sugars.