**Ecology B2: Food Security and Sustainable Production – Editable PowerPoint & Comprehension Worksheet ** Description: This editable PowerPoint and accompanying comprehension worksheet are designed to teach key components of the B2 Ecology topic: Factors affecting food security Making food production more efficient Sustainable food production With exams approaching, time is often limited. This resource is structured to cover a three-page lesson in a single session, with the option to assign parts as homework. Worksheet Features: A detailed reading passage for students to engage with the topic Recall questions to assess learning and understanding (suitable for Level 6) Extension questions designed to challenge higher-ability students (Levels 7–9) PowerPoint Features: Engaging images to support discussion and conceptual understanding Smoothly guides students into independent worksheet tasks Includes 10 whiteboard-style multiple-choice questions and additional extension questions to consolidate and challenge learning This ready-to-use lesson saves planning time while providing differentiated opportunities for students to master key ecology concepts.

**Investigate how exercise intensity affects heart rate in this PAG 11.1 worksheet. No practical required – a full set of results is provided for analysis. Full description: This resource supports PAG 11.1 and guides students through an investigation into the effect of exercise intensity on heart rate without requiring students to carry out the practical. A complete set of results is provided, allowing the focus to remain on data handling and analysis skills. Tasks within the worksheet include: Identifying the physiological variable and forming a testable hypothesis as well as a null-hypothesis Interpreting a provided method and considering ethical, health and safety, and risk assessment issues Analysing quantitative data using tables to calculate standard deviation Carrying out calculations and applying appropriate statistical tests to assess significance Drawing conclusions - rejecting/accepting null hypothesis Evaluating the investigation and suggesting improvements Ideal for A-level Biology, revision lessons, cover work, or situations where practical work is not possible, while still fully addressing PAG 11.1 skills and exam requirements. 2 hours worth of lesson time with additional time to complete some tasks as homework