Which factor contributes to the quality of the natural environment?

The quality of the natural environment is primarily influenced by the quality of air and water. Clean air and water are essential components of a healthy environment and are critical for the wellbeing of individuals and communities. Poor air quality can lead to respiratory and cardiovascular diseases, while contaminated water sources can result in various health issues, including gastrointestinal infections and more severe illnesses.

When the air and water are contaminated or of low quality, this can have a direct negative impact on public health, ecosystems, and biodiversity. Efforts to monitor and improve air and water quality often play a fundamental role in public health initiatives aimed at reducing pollution and protecting natural resources.

In contrast, while the types of healthcare services, workplace conditions, and the prevalence of endemic diseases all have significant implications for public health, they do not directly reflect the intrinsic qualities of the natural environment itself, making the quality of air and water the most relevant factor in this context.