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: The global threat from sea level rise and coastal flooding is far greater than what we thought it is.
Example Output: agrees

Example Input: The CO2 emitted by burning fossil fuel is the greenhouse gas that causes global warming.
Example Output: agrees

Example Input: The measure of introducing a carbon tax should be adopted soon.
Example Output:
agrees

