If a resource is scarce that means they are in short supply in this case they don't have a lot of food so they have to fight for there food and if they can't get any they won't survive SHORTER

If a resource is scarce, it means that there is not enough of it available. This can lead to competition and struggle for access to that resource. In the case of food scarcity, individuals may have to fight for their share of food in order to survive.