Assessing Toxicity

Causes some chemicals to concentrate in animal fat

• acute effects

• bioaccumulation

• biomagnification

• chronic effects

Chemicals breakdown into simpler forms

• exposure

• dose

• toxicity

• degradation

Chemicals build up through the food chain

• acute effects

• bioaccumulation

• biomagnification

• dose

Caused by exposure to a single dose

• acute effects

• chronic effects

• bioaccumulation

• biomagnification

Develop slowly due to long-term exposure to contaminants in water, food, or the environment.

• acute effects

• chronic effects

• bioaccumulation

• biomagnification

Total amount of chemical that an individual eats, drinks, breathes, or absorbs through the skin.

• exposure

• dose

• toxicity

• degradation

Means coming in contact with a chemical through food, water, air, or other sources.

• exposure

• dose

• toxicity

• degradation

The biological changes in living things caused by exposure to a toxic substance.

• exposure

• dose

• toxicity

• response

Dose causing death of half of the organisms exposed at this level.

• LD₅₀

• LC₅₀

• TC₅₀

• TD₅₀

Concentration causing death of half of the organisms exposed at this level.

• LD₅₀

• LC₅₀

• TC₅₀

• TD₅₀