There are the topics covered in NCERT exemplar solution Class 9 chapter 14

• Water cycle and all the processes involved in water cycle.

• Carbon cycle and all the process involved in carbon cycle.

• Oxygen cycle and all the process involved in oxygen cycle.

• Nitrogen cycle and all the process involved in nitrogen cycle.

• NCERT exemplar Class 9 Science solutions chapter 14 discusses Greenhouse gases and greenhouse effect.

• Ozone layer and its depletion.

• Soils and the process by which soil is made.