What does a higher level of toxicity indicate?

A higher level of toxicity indicates a greater potential harm to organisms. This means that as the toxicity level rises, the likelihood that the substance can cause adverse effects on living organisms, including humans, animals, and plants, also increases. Toxic substances can lead to various harmful outcomes, such as physiological disturbances or even death, depending on the exposure level and the organism's susceptibility.

In the context of pesticide use or any chemical application in turf and ornamentals, understanding the toxicity is crucial for safe handling and application. Higher toxicity may necessitate stricter safety measures to protect applicators, nearby wildlife, and the environment. This awareness is essential for integrated pest management strategies, where both effectiveness and environmental safety balance each other.

Other choices do not directly relate to the concept of toxicity in this context. For instance, while effectiveness can be a concern regarding the application of substances, it doesn't necessarily correlate with toxicity levels. Similarly, toxicity doesn't directly determine the longevity of a substance in the environment or its economic cost.