Read the passage and find if the passage agrees, disagrees, or has a neutral stance on whether Global warming is caused by human activities. Answer only with keyword (a) agrees - if passage agrees with the target (b) disagrees - if passage disagrees with the target (c) neutral - if the given passage neither agrees nor disagrees with the target. You don't need to use external knowledge in this task, and you have to answer based on the given passage.

[EX Q]: The U.S. going back to the stone age will not do anything to stop global warming.
[EX A]: neutral

[EX Q]: The global warming of the 1900s is caused by a rise in solar output.
[EX A]: disagrees

[EX Q]: Coral reefs may be more resilient to global warming and bleaching than we think.
[EX A]:
neutral