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.
If you apply a fertilizer that is rich in nitrogen and little of the others (phosphorus and potassium), for example, then the plant will have a relative tendency to grow more leaves and less roots and flowers. This isn't good for your roses and zinnias, but higher nitrogen is great for your lawn.