Human Health and the Environment
Pollutants can have both direct and indirect impacts on the health of organisms, including humans.
It can be difficult to establish a cause and effect between pollutants and human health issues because humans experience exposure to a variety of chemicals and pollutants.
What are the types and characteristics of major groups of pollutants in environmental toxicology?
Why is there controversy and concern about synthetic organic compounds such as dioxin?
Bioaccumulation and Biomagnification
Humans also experience harmful effects from biomagnification, including issues with the reproductive, nervous, and circulatory systems.
How do the processes of bioaccumulation and biomagnification work and why are they important in toxicology?
How is bioaccumulation different from biomagnification?
How did Rachel Carson contribute to the study of toxicology?
Why did Rachel Carson title her book Silent Spring?
What are some environmental effects of bioaccumulation and biomagnification?
Lethal dose 50% (LD50) is the dose of a chemical that is lethal to 50% of the population of a particular species.
A dose response curve describes the effect on an organism or mortality rate in a population based on the dose of a particular toxin or drug.
What is LD50? Why is LD50 important to toxicology?
What is the dose-response concept and how does it relate to LD-50, TD-50, LC-50, ED-50, ecological gradients, and tolerance?
What is the importance of the threshold effect of environmental toxins?
As equatorial-type climate zones spread north and south in to what are currently subtropical and temperate climate zones, pathogens, infectious diseases, and any associated vectors are spreading into these areas where the disease has not previously been known to occur.