What is the combined benefit of enhancing water quality and reducing runoff?

Enhancing water quality and reducing runoff creates conditions that support rich biodiversity. Improved water quality ensures that aquatic environments are healthier, providing better habitats for various species of fish, plants, and other organisms. It helps to reduce pollutants that can harm these ecosystems and promotes a balanced ecosystem where different species can thrive.

When runoff is effectively managed, particularly from agricultural and urban areas, there is a decrease in the introduction of harmful substances such as fertilizers, pesticides, and sediments into water bodies. This leads to clearer waters that are more conducive to supporting a diverse range of life, including both flora and fauna. In such environments, the interconnectedness of species can flourish, which is essential for maintaining ecological balance and resilience.

The other options represent negative outcomes that directly contradict the benefits of improving water quality and managing runoff. This further underscores why the focus should be on supporting biodiversity through these positive environmental practices.