The longest continuous observed records of surface air temperature at any location are about:

Which of the following is most true about 'the greenhouse effect'?

According to figures and text in the lessons, during the last glacial maximum, vegetation was:

Here is an hypothetical scenario of atmospheric CO₂

concentrations:

Which of the emissions' shown below can cause this hypothetical scenario?

(Note the CO

If we examine isotopes in an ice core, what does a decrease in δ¹⁸O mean?

Which of the following describes the SAM?

Compared to previous centuries of recent millennia, the global-mean warming over the last century was:

Climate science shows that some extreme events have changed since about 1950s. The most confident changes have been increases in the global average frequency of: