Answer:
Global temperatures; in the past half-century.
Explanation:
The graph of the global temperatures in the northern hemisphere was more or less costant until it spiked very hard in the past half-century. Therefore, it is called the "hockey stick" chart because its shape resembles a hockey stick. The original graph was made, as the exercise details, by Michael Mann and his colleagues in 1999.
The American colonists saw the Quebec Act as yet another law that increased British control over North America.
why do you want to know where some kid lives?
