If one were to boil this whole process down, it is the system developed to produce the metal type that would prove to be the most innovative. Many of the processes used to print these books generally existed in one form or another, but the metal type is a stroke of genius as nothing like it had existed before.
Soil Conservation. Soil conservation is a combination of all methods of management and land use that safeguard the soil against depletion or deterioration by natural or human-induced factors.
Researchers discovered hundreds of years ago that soil simply holds mineral nutrients close to plant roots, but the soil itself isn't necessary for plant growth. Using a growing method called hydroponics, you can grow plants in a watery solution of mineral nutrients instead of soil. The word âhydroponic comes from the Greek words hydro (âwater) and ponos (âlabor). The keys to plant growth are a variety of mineral nutrients, including nitrogen, phosphorus, and potassium. If you can add these necessary mineral nutrients into a plant's water supply, you no longer need soil for the plant to grow. Just about any plant can be grown with hydroponics. Hydroponic containers can take many forms. Large hydroponic farms use vast networks of plastic pipes with holes for plants.