In today’s lesson, Miss Amy Croomery introduces the topic of living things within the field of biology, focusing on the differences between living and non-living entities. She outlines the seven vital functions necessary for living organisms—movement, respiration, sensitivity, growth, reproduction, excretion, and nutrition—using the acronym Mrs. Gren to help students remember them. The lesson includes examples of living things, emphasizes the importance of these functions, and explains how various organisms might perform them differently.