Which statement below correctly describes the aquatic life support of the watershed in the atrazine study?

The statement regarding the watershed indicates that it may not support life, as 80% of the tested sites exceed EPA standards. This suggests that conditions within the watershed are likely detrimental to aquatic organisms, which could be due to toxic substances or pollutants, such as atrazine, negatively impacting water quality. The exceedance of EPA standards typically reflects levels of contaminants that may be harmful or lethal to aquatic life, consequently hindering the ecosystem’s ability to sustain organisms.

In this context, an important understanding is that exceeding EPA standards points to a likelihood that water quality is compromised, which could result in habitat degradation, reduced biodiversity, lower oxygen levels, and other conditions that make it inhospitable for aquatic species. Thus, the integrity of the ecosystem may be severely threatened, indicating a lack of support for aquatic life.