This document discusses the components of the environment. It defines environment as our basic life support system, providing air, water, food, and land. The environment has three main components: 1) the natural environment includes land, water, air, plants and animals; 2) the human-made environment includes buildings, roads, industries and bridges; 3) the human environment concerns how people live in different environments and the features they create. The document asks questions to help students identify natural vs. human-made parts of the environment and understand its key components.