Topic: Living Things and Their Habitats Focus: Human Impact A 6-week Science Unit of Work focusing on; the impact humans have locally (giving examples of positive and negative ways in which humans change the environment) litter - locally (children will plan and carry out a litter survey, collecting and presenting data) the impact of litter on animals food chains (what happens when a food chain is broken) zoos (arguments for and against keeping animals in zoos) Includes all accompanying resources.