In nature living things have different relationships with each other, these are called species interactions. There are 5 different interactions the first one is predator prey which is when the predator hides and waits for a prey and when its close enough the predator attacks and kills it. The next is competition which is when a organism is eating and another one gets closer to eat until both animals start fighting for the food sources for survival. There is also mutualism which is when different species benefit from each other. There is commensalism which is when a species gets benefit from another without harming the other and the last one is parasitism which is when parasites benefit from other by injecting their eggs.