... starting material for all organic matter. The breakfast you ate4Introduction to Plants and Plant Nutrition today, whether eggs, cereal, or bacon, was derived, ultimately,from plants. Plants also ... to the young tissue, it would almost7Introduction to Plants and Plant Nutrition 8 Plant Nutrition Figure 1.1 Nutrient deficiencies in plants are caused by a lack ofmineral nutrients. The growing ... it11Introduction to Plants and Plant Nutrition was returned to the terrestrial cycle by lightning, which makes plant- usable forms of nitrogen from nitrogen gas. Some ofit was fixed into usable forms by...