Living Environment Regents Practice Test

What might be a consequence of biodiversity loss in oak-hickory forests?

1. More resilient forest ecosystems

2. Enhanced food production for humans

3. Vulnerability to environmental changes

4. Increased soil fertility

The correct answer is: Vulnerability to environmental changes

Biodiversity loss in oak-hickory forests can lead to increased vulnerability to environmental changes. Diverse ecosystems tend to be more resilient because they have a variety of species that can perform different roles in maintaining ecological balance. When biodiversity decreases, the remaining species may not be capable of adapting to new challenges, such as climate change, disease, or invasive species. This inability to adapt can result in decreased ecosystem stability and functionality, making the forest more susceptible to damage and less able to recover from disturbances. In contrast, the other options describe outcomes associated with healthy, diverse ecosystems, rather than the consequences of biodiversity loss. For instance, more resilient forest ecosystems, enhanced food production for humans, and increased soil fertility are typically found in environments where biodiversity is high, as the interactions among various species contribute to overall ecosystem health and productivity.