This student workbook addresses essential terminology and concepts drawn from the content statements in the new ESS syllabus (first exams 2026). It starts with a section of key vocabulary and then progresses through every content statement in topic 2.1 Individuals, populations, communities, and ecosystems. Each prompt in the workbook aligns with one of the ESS course's Assessment Objectives and are written to model the types of questions students encounter on the IB examination at the end