I think it's agriculture.
Global warming is affecting all parts of the world today.(ex: drought, Heavy snow and rain, reduction of sea ice, sea level rise, etc.)
There is still a shortage of food in Africa. I think it's going to get worse. That's why I think it's agriculture.
What do you think?
Climate change will force the focus onto certain industries. Renewable energy is obviously one, and I do agree with your point about agriculture, but mainly in the form of genetic engineering of crops as we try to feed a large population in ever-worsening conditions.