Over the past 100 years, Earth's temperature has increased about __________. Solar heating due to space weather is responsible for about _________ of this increase.
Over the past 100 years, Earth's temperature has increased about 1 degree Celsius (1.8 degrees Fahrenheit). Solar heating due to space weather is responsible for about a small fraction of this increase.
Over the past 100 years, Earth's temperature has increased about 1 degree Celsius (1.8 degrees Fahrenheit). Solar heating due to space weather is responsible for about 10% of this increase.
