Biological World
Free Junior Cycle Science notes for Biological World. Browse 12 topics and read online without an account.
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B Diversity of Living ThingsDiversity of living things explores how organisms are classified, how natural selection drives evolution, and how species interact within habitats.B Breathing SystemThe breathing system takes in oxygen for cellular respiration and removes carbon dioxide and water vapour from the body.B Cells and the MicroscopeCells are the basic building blocks of all living things, studied in detail using a light microscope.B Circulatory SystemThe circulatory system consists of your heart, blood vessels, and blood, working continuously to deliver oxygen and nutrients while carrying away metabolic…B Digestive SystemThe digestive system breaks down large, insoluble food into small, soluble molecules that enter the bloodstream to nourish body cells.B Ecology & Habitat StudyEcology is the study of how living organisms interact with one another and their environment.B EvolutionEvolution describes how populations of living things gradually change over generations through natural selection.B Reproduction and GeneticsReproduction ensures species survival, while genetics explains how traits pass between generations.B Human HealthHuman health is a complete state of physical, mental, and social wellbeing influenced by genetics, environment, and daily choices.B Human ReproductionHuman sexual reproduction involves male and female sex cells joining to create a new individual that develops in the uterus until birth.B PhotosynthesisPhotosynthesis is the process green plants use to make glucose and oxygen from carbon dioxide and water, using light energy trapped by chlorophyll.B Plant Growth & ReproductionGreen plants make their own food by photosynthesis, respire constantly to release energy, and reproduce sexually or asexually.
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