Practice problem
Climate Change — Overview & Effects

(A)

(B)

(C)

(D)
The charts above show the results from four different studies done over different periods of time. The temperature given is the average temperature for that year, week, day, or hour. The snowflakes show the average snowfall for that year, week, day, or hour:
One snowflake = Some snow
Three snowflakes = A lot of snow
X over snowflake = No snow
Which of the studies was most likely looking at climate change?