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.

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


[Q]: Antarctica was once a lush, green continent, icing over only in the past 35 million years, amid a general cooling of the worldâs climate.
[A]: disagrees


[Q]: The ramifications of vanishing ice will also be felt far from the poles.
[A]:
agrees