Year 9 students have been studying ecosystems and how plants use energy from sunlight to produce their own food (glucose) during photosynthesis. Not all of the building blocks of plant tissues can be derived from the carbon dioxide and water (the reactants within the photosynthesis reaction). A variety of mineral ions are absorbed through the roots and used to make proteins and vital components that make up plants, including chlorophyll. The students have been learning about how farmers aim to improve their crop yield by using fertilizers containing nitrates, phosphates and potassium. Below are some of the leaflets produced displaying what they have learned.