This Power Point presentation covers objectives 3.1, 3.2 and 3.3 for Topic 3 as listed in Cambridge Environmental Management AS 2024 syllabus. The slides are fully editable, so if you want to add, change, or delete something, it's easy! Make it your way! Major topics: how to calculate population density from given data, factors influencing population density and distribution, how to calculate dependency ratio, describe populations in terms of their size and the composition of different age group