Solutions for Class 7th: Ch 18 Wastewater Story Exercises 1. Fill in the blanks: (a) Cleaning of water is a process of removing __________...

Solutions for Class 7th: Ch 17 Forests: Our Lifeline Science   Exercises 1. Explain how animals dwelling in the forest help it grow and rege...

  Solutions for Class 7th: Ch 16 Water: A Precious Resource Science Exercises 1. Mark ‘T’ if the statement is true and ‘F’ if it is false: (...