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.

Example Input: Environmentalists concern is not just that the trillions devoted to rescuing the global financial system mean less cash for the climate-change agenda.
Example Output: neutral

Example Input: Even if the warming increases, humans can adjust.
Example Output: neutral

Example Input: The fight over planet-warming auto emissions has split the nation's auto industry.
Example Output:
neutral