Ever wonder what makes up you? Or trees, puppies, bugs, and even slime? The answer is something teeny-tiny called cells! In this colorful, kid-friendly adventure, young readers take a fun trip inside the microscopic world where busy workers, helpful organelles, and gooey parts all work together to keep every living thing alive. Perfect for curious kids, classrooms, and budding scientists, What's in a Cell? breaks big science ideas into simple, engaging explanations with playful art that makes learning exciting and memorable!