LD₅₀ measures

Cyanide, heroin, and nicotine are concidered extreamly toxic, meaning their LD₅₀ is in this range.

Lethal concentration that will kill 50% of a test population

LC₅₀ is used primarily for

How much is one ppm?

I eat a mushroom and I die. What is the type of toxicity?

I am exposed to radiation as a child. Ten years later I die from it. What is the type of toxicity?

I ingest lead with every glass of water I drink. What is the type of toxicity?

Several chemicals in sub-toxic amounts when mixed together become toxic.

Something, like PCBs, that causes cancer is called a

Something, like thalidomide, that causes malformed embryos, is called a

Effluent pipes, smokestacks, and oil spills are all examples of

What is not true about heavy metals?

Which type of pollutant does not require direct contact

The Stockholm Convention of 2001 covers these guys

Living organism that can cause disease in another organism.

The process where toxins build up in individuals over time & with multiple exposures

Subtoxic amounts of chemicals become toxic in combination due to the cumulative effect on immune systems

How long a substance remains in the environment