This ready-to-use science resource covers the oxygen cycle, photosynthesis, respiration, and their role in sustaining life on Earth. With engaging worksheets, comprehension questions, fill-in-the-blanks, true/false, multiple-choice, word scrambles, and fun facts, your students will gain a clear understanding of how oxygen moves between the atmosphere, plants, animals, oceans, and decomposers.✨ What’s Included: Informational passages with student-friendly explanations Question sets (short ans