Earth Science Question of the Day
Daily challenge for Earth Science. Test yourself and track progress.
The graph shows average annual global temperatures since 1880 compared to the long-term average (1901-2000). The zero line represents the long-term average temperature for the whole planet; blue and red bars show the difference above or below average for each year.
Why does the graph compare the last 200 years of Earth's climate to the previous 1000 years?
Select an answer and click Check.