What aspect of sustainable landscaping reduces water pollution?

• A. Non-native plants
• B. Excessive fertilization
• C. Improved plant health
• D. Increased pesticide use

Answer: (C)

Improved plant health plays a crucial role in reducing water pollution. When plants are healthy, they are better equipped to absorb water efficiently, which reduces runoff. Healthy plants have deeper and more extensive root systems, allowing them to capture and utilize water and nutrients more effectively. This not only minimizes the amount of water that might carry pollutants into nearby water bodies but also encourages healthy soil ecosystems that can filter out contaminants before they reach ground or surface water.

Conversely, non-native plants might not be as effective in promoting local biodiversity or maintaining soil health, and excessive fertilization can lead to nutrient runoff, causing pollution in waterways. Increased pesticide use can harm both plant health and the surrounding environment, potentially leading to contaminated water systems. Thus, focusing on improving plant health is a sustainable practice that helps protect water quality by minimizing pollution.