Start your lessons strong with this Ecosystem Cycling and Flow Models Bell Ringer Worksheet! This ready-to-use resource features 30 questions across multiple formats—ideal for warm-ups, quick reviews, independent practice, and formative assessments. Students will use scientific models to explore how matter cycles and energy flows among ecosystem components. Key concepts include food chains, food webs, producers, consumers, decomposers, nutrient cycling, energy transfer, ecosystem interactions, a