Answer:
Global average temperatures have risen increasingly over the past 200 years.
Step-by-step explanation:
It has risen 0.7 degrees Celsius in the past century alone, which is 10x the average it's supposed too! Meaning 1.4 degrees Celsius has risen over the past 200 years (meaning it has risen 34.52 degrees Farrehnheit!!)
Hope i helped! :)