This chart shows the global temperature anomaly (the difference of the expected temperature and the actual temperature) over a span of 130 years which facts related to climate change does the chart reveal?

(note: select all that apply)

1. from 1975 to 2010, temperatures on earth were higher than normal.

2. from 1880 to 1940, temperatures on earth were higher than normal.

3. the 10 warmest years in the time span all occurred in 1945.

4. the coolest year in the time span occurred 1945

5. temperatures on earth do not fluctuate from from year to year