1. Circulatory System and Blood Components – Structure and function of red and white blood cells, role of haemoglobin, and adaptations of veins and arteries. 2. Homeostasis and Endocrine System – Regulation of blood glucose by insulin, causes of diabetes, thermoregulation in humans, and effects of hormone imbalances. 3. Photosynthesis and Plant Adaptations – Leaf structure and stomata function, water transport in plants, role of xylem and phloem, and environmental adaptations. 4. Ecosystems and Food Chains – Effects of slug pellets on ecosystems, impact of non-indigenous species, food web interactions, and decomposition processes. 5. Respiration and Metabolism – Oxygen consumption rates, energy transfer in respiration, differences between aerobic and anaerobic respiration, and factors affecting breathing rates. 6. Human Population and Food Security – Effects of deforestation on ecosystems, impact of high meat consumption on energy transfer, food chain efficiency, and sustainability concerns.