1. The classroom agenda includes praying, an introduction to the topic of ecosystems and the environment, an educational activity, watching a video, and a small quiz. 2. The lesson is about ecosystems and the environment. An ecosystem includes living organisms like plants and animals as well as non-living parts of the environment like air, water, soil, and climate. Living things depend on non-living things. 3. The document defines key terms related to ecosystems, including organism, population, community, ecosystem, environment, and habitat. It also explains the differences between environment, ecosystem, and habitat.