On average, how much has the temperature increased since 1900?

The average global temperature has increased by about 0.7 degrees Celsius since 1900 as a result of various factors, including greenhouse gas emissions and changes in land use. This increase is significant enough to influence weather patterns and contribute to climate change, leading to more extreme weather events and shifts in ecosystems.

The value of 0.7 degrees Celsius aligns with research conducted by climate scientists, which indicates that this figure is representative of the overall warming trend observed in the 20th and early 21st centuries. The other options reflect either lower or higher temperature increases that do not accurately represent the data compiled from global temperature records, making them less reliable. The choice of 0.7 degrees Celsius highlights the urgent need to address climate change and its impacts on our planet.