Week 6 Textbook Reading: Invasive Species Flashcards
What is an exotic species?
A species living outside of its historical range.
What is an invasive species?
A species that spreads rapidly across large areas and causes harm.
What is a mutagen?
A type of carcinogen that causes damage to the genetic material of a cell.
What is a dose-response study?
A study that exposes organisms to different amounts of a chemical and then observes a variety of possible responses, including mortality or changes in behavior or reproduction.
What is an acute study?
An experiment that exposes organisms to an environmental hazard for a short duration.
What is a chronic study?
An experiment that exposes organisms to an environmental hazard for a long duration.
What is LD50?
The lethal dose of a chemical that kills 50% of the individuals in a dose-response study.
What is ED50?
The effective does of a chemical that causes 50% of the individuals in a dose-response study to display a harmful, but nonlethal, effect.
What is the sublethal effect?
The effect of an environmental hazard that is not lethal, but which may impair an organism’s behavior, physiology, or reproduction.
What is the no-observed-effect level (NOEL)?
The highest concentration of a chemical that causes no lethal or sublethal effects.
What is a retrospective study?
A study that monitors people who have been exposed to an environmental hazard, such as a harmful chemical, at some time in the past.
What is a prospective study?
A study that monitors people who might become exposed to an environmental hazard, such as a harmful chemical, at some time in the future.
What is synergistic interaction?
A situation in which two risks together cause more harm than expected based on the separate effects of each risk alone.
