1 The objective of chronic aquatic toxicity tests with effluents and pure compounds is to estimate the highest safe or no-effect concentration of these substances.
Finding the highest safe concentration of substances is what chronic aquatic toxicity tests are designed to do.
Chronic aquatic toxicity tests are about finding the lowest no-effect concentration of the substances.
Someone is wearing a green shirt.
Barik eats people.
A performer is singing on a stage.
She was as bitter as they get.
They're blowing the Iranians way out of proportion.
The border sees trading near the night time.