Respuesta :
Increased demand for electricity and transportation have led to increased emission of greenhouse gases.
What are green house gases?
Green house gases are those gases that are able to trap and re-radiate infrared radiation back to the earth thereby gradually causing a rise in the temperature of the earth. This phenomenon is known as global warming.
The chart from which the question should be answered is not shown but it must be known that as demand for electricity and transportation increased in the 20th and 21st century, the rate of emission of greenhouse gases increased likewise.
Learn more about green house gases: https://brainly.com/question/11595872