Question

what was the cause of climatic change

Answer 1

reasons of climatic changes are as follows :-

Human activities like Burning fossil fuels, methane's etc,
volcanic activity,
Changes in the greenhouse effect, which affects the amount of heat retained by Earth’s atmosphere,
amount of light or heat from sun to earth,
solar output, 

Answer 2

Hello,

• Climate change describes a change in the average conditions — such as temperature and rainfall — in a region over a long period of time. ... Global climate change refers to the average long-term changes over the entire Earth.

thanks :)