Biology

This chapter covers topics such as Sowing, Basic Practices of Crop Production, Agricultural Practices, Adding Manure and Fertilisers, Harvesting, Preparation of Soil, Irrigation, Food from Animals, Protection from Weeds, and Storage.

This chapter covers topics such as Viruses, Microorganisms and Us, Food Preservation, Microorganisms, Nitrogen Cycle, Bacteria, Protozoa, Algae, and Fungi.

This chapter covers topics such as Reforestation, Wildlife Sanctuary, Migration, Recycling of Paper, Conservation of Forest and Wildlife, Endemic Species, Biosphere Reserve, Red Data Book, National Parks, and Deforestation and Its Effects.

This chapter covers topics such as Comparison of Plant and Animal Cells, Cell Structure and Function, The Cell, Variations of Cells, and Discovery of the Cell.

This chapter covers topics such as Air Pollution, Case Study: The Taj Mahal, Water Pollution, Greenhouse Effect, Water Conservation, and Potable Water and Ways of Water Purification.

This chapter covers topics such as Changes at Puberty, Hormones other than Sex Hormones, Reaching the Age of Adolescence, Secondary Sexual Characters, Sex Determination in Humans, Role of Hormones in Initiating Reproductive Function, etc.

This chapter covers topics such as Modes of Reproduction, Development in Organisms, Sexual Reproduction in Animals, and Asexual Reproduction in Animals.