Interactions in an ecosystem, there are three interactions, and we already talked about two. The first one of course: Biotic, living things. The second one: Abiotic, non-living things. And third: Limited Factors, there are four of these. Food, Water, Shelter, and Space. These four things are limited in an ecosystem. So you might think: What does limited mean? Will animals die? Well, I'll tell you the definition of limited, it means, constricted or low. So if you have a limited supply of food, you would have a low food supply. Anyways, yes animals would die, some would live. It depends on what that living organism needs, for instance. A buffalo, or bison; they would need grass. Sure theres alot. But water, as you can tell from the picture above, its hard to find water. So, bison that can't find water, could die, and become unconscious.