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]: Global warming can increase snowfall by boosting the amount of moisture in the air.
[EX A]: agrees

[EX Q]: The added burden of climate change, with climate change potentially negative effects on sea life, makes the establishment of refuges even more urgent.
[EX A]: agrees

[EX Q]: Such problems will be vastly worse if global temperatures continue to rise.
[EX A]:
agrees