non toxic

Toxicity is the degree to which a chemical substance or a particular mixture of substances can damage an organism. Toxicity can refer to the effect on a whole organism, such as an animal, bacterium, or plant, as well as the effect on a substructure of the organism, such as a cell (cytotoxicity) or an organ such as the liver (hepatotoxicity). Sometimes the word is more or less synonymous with poisoning in everyday usage.
A central concept of toxicology is that the effects of a toxicant are dose-dependent; even water can lead to water intoxication when taken in too high a dose, whereas for even a very toxic substance such as snake venom there is a dose below which there is no detectable toxic effect. Toxicity is species-specific, making cross-species analysis problematic. Newer paradigms and metrics are evolving to bypass animal testing, while maintaining the concept of toxicity endpoints.

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    Tile Adhesive Compatible With Fish Ponds (non toxic to fish)

    I want to install some tile adjacent to outdoor fish ponds. This will be installed on wood, so I want to use S2 (high deformability) adhesive. Which type of adhesive would be least toxic to the fish (Type C - cement based, Type D - Dispersion, Type R - Resin). Also, which particular...

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