Systems-level research focuses on studying complex systems in their entirety, rather than breaking them down into individual components. This approach allows researchers to understand how different parts of a system interact and influence each other, leading to a more comprehensive understanding of the system as a whole. Systems-level research typically involves modeling, simulation, and analysis of the system's behavior, with the goal of identifying emergent properties and optimizing system performance. This research area is commonly used in fields such as engineering, biology, ecology, and economics.