Tag: 9th Biology

  • Biology IX | Improvement in Food Resources | Part 4

    Improvement in Food Resources | Part 4 2. Poultry Farming The poultry industry with its production in the form of eggs and meat is of particular importance in providing balanced diet for the human population. Poultry birds serve human beings in various ways. They are not only efficient converters of agriculture by products, particularly of…

  • Biology IX | Improvement in Food Resources | Part 2

    Improvement in Food Resources | Part 2 Fertilizers Fertilizers are the sources of plant nutrients, manufactured commercially from chemicals. Fertilizers supply Nitrogen, Phosphorus and Potassium (NPK). Basically they are used for good vegetative growth (i.e., growth of leave, branches and flowers), giving rise to healthy plants. Fertilizers are one of the major components for obtaining…