Food scarcity can be caused by a few factors. It may be that there isn't any food available or that the food is not accessible due to lack of funds or the transportation required to get it. Food scarcity is the primary reason that there is hunger around the world. Even when we think that food is plentiful in one location, that does not mean it is available in others. Climate change can exacerbate food supply issues due to its impacts on agriculture, transportation, and other infrastructure.
Now that you know a bit more about this climate change-related problem....