Question

When did the climate first start to change

Answer 1

Answer:

The history of the scientific discovery of climate change began in the early 19th century when ice ages and other natural changes in paleoclimate were first suspected and the natural greenhouse effect was first identified

Answer 2

Answer:

19th Century

Explanation:

From research climate change started in the early 19th century, when ice ages and other natural changes in paleoclimate were first suspected and the natural greenhouse effect was first identified.