1) The document is a presentation on climate change by Mr. Virender Chhachhiya for the Department of Geography at Panjab University Chandigarh.
2) It discusses the definitions of climate and climate change, causes of climate change including both natural factors and human activities, and effects of climate change on various systems.
3) Solutions to address climate change discussed include mitigation efforts in the energy sector, shifting to renewable energy, individual actions, and international cooperation through frameworks such as the UNFCCC and Kyoto Protocol.