Answer the questions based off the graph. 1. What is shown on the X axis of this graph?
A. Temperature Change B. Year C. Solar irradiance or. D. Temperature vs solar activity

2. What is the average temperature reading in (oC) for the year 2000? (This is an estimate choose the number that would be closest)
A.-0.75. B.-0.49 C.0.5 or D.0.55

3.What year is tempature change average at its highest?
A. 1960 B. 1940 c. 2000 or d.1980

4. What year is solar irradiance at its highest?

A.1960
B.1940
C.2000
D.1980