Class 9: Biology Chapter 5 solutions. Complete Class 9 Biology Chapter 5 Notes. Lakhmir Singh Manjit Kaur Solutions for Class 9 Biology: Chapter 5- Why do we fall ill? Lakhmir Singh Manjit Kaur 9th Biology Chapter 5, Class 9 Biology Chapter 5 solutions Short Answer Type Questions 1. Differentiate between healthy and disease-free. Answer: Healthy […]