Which aspect of ecosystems can promote greater resilience?

Diversity of species and habitats within an ecosystem is a critical factor that can promote greater resilience. A diverse ecosystem is better equipped to withstand environmental changes, disturbances, and stresses because it includes a variety of species that can fulfill different roles and functions. This diversity allows ecosystems to respond more flexibly to changes, such as climate variations, habitat destruction, or introduction of invasive species.

For example, if one species is affected by a disease or changes in climate, other species can help maintain the ecosystem's functions, such as nutrient cycling, pollination, and food web dynamics. The presence of multiple habitats also provides different niches and resources, further supporting a wide range of organisms and enhancing interactions among them.

In contrast, the other options present scenarios that typically decrease resilience. High levels of pollution can harm species and disrupt ecosystem functions, monoculture cropping systems lead to a lack of genetic diversity and increased vulnerability to pests and diseases, and low species interaction can hinder the ability of ecosystems to adapt to changes. Thus, the presence of diverse species and habitats is fundamental to building a resilient ecosystem.