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.

The science is uncertain and the costs of reining in carbon dioxide and other emissions will be too high.
disagrees

If we reach a certain point in the warming the warming, what we’ll end up with is a vicious cycle, where the warming causes additional permafrost melt, which causes additional CO2 to be released to the atmosphere, which causes additional warming, which creates this vicious cycle.
agrees

Man-made global warming may further lessen the likelihood of the freak atmospheric steering currents that last year shoved Superstorm Sandy due west into New Jersey.

disagrees