The Intergovernmental Panel on Climate Change's (IPCC) most recent assessment report in 2014 asserted what?
a) Earth's climate is changing, but there is no evidence that human emissions have any correlation with this change
b) climate can be influenced by humans, but no significant changes in climate have happened in the past 50 years
c) it is 95-100 certain that humans have been the dominant cause of significant climate change over the past 50 years
d) human activities cannot cause climate change - climate change is caused by volcanoes and plate tectonics
Question 2
What does the Milankovitch cycle refer to?
a) the cycle associated with sunspots that generally flare up every 11 years
b) the cycle associated with Earth's volcanism
c) the cycle that takes into account Earth's eccentricity, obliquity, and precession that affect Earth's climate
d) the cycle that takes into account how much dissolved CO2 exists in the ocean that varies cyclically and affects ocean acidity