Engaging Ecosystem Lessons Ages 11–13

I need a set of science materials on ecosystems tailored to learners aged 11–13. The writing must stay friendly and engaging, striking a balance between conversational flow and scientific accuracy so a middle-school reader grasps key ideas without feeling talked down to... (Budget: $250 - $750 USD, Jobs: Academic Writing, Article Writing, Content Creation, Content Writing, Creative Writing, Educational Research, Ghostwriting, Instructional Design, Research Writing)