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: Climate change is a likely threat to national security – though scientists can not yet predict particular climate effects of anticipated global warming with any degree of certainty.

A: agrees
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Q: The measure of introducing a carbon tax should be adopted soon.

A: agrees
****
Q: The global warming debate is over.

A:
disagrees
****