Reports from the are the most reviewed and widely accepted information we have on climate change.

The IPCC is an agency of the United Nations.  It was established in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP), and has the endorsement of the UN General Assembly.  The IPCC provides leaders across the world with scientific assessments about climate change -- what has taken place and what trends are projected for the future.  

A major report was issued by the IPCC in October, 2018,  which warned that urgent actions are needed to keep global average temperatures from heating up more than 1½ degrees Celcius.  (The Celsius temperature scale is named after Swedish astronomer Anders Celsius [1701–1744].  It has 0°as the freezing point of water and 100° as the boiling point of water.)

The IPCC warns that if average global temperatures rise more than 1.5° C, there will be dangerously higher risks of drought, floods, and other extreme weather that will cause severe problems for people and the planet.

for your : )

i do believe its (d) it allowed the government to offer pioneers sixty acres of western land if they lived on it and made improvements to it.

explanation: signed into law in may 1862, the homestead act opened up settlement in the western united states, allowing any american, including freed slaves, to put in a claim for up to 160 free acres of federal land. by the end of the civil war, 15,000 homestead claims had been established, and more followed in the postwar years