ENVR 1000 Lecture 4: Unit 4

• School: University of Manitoba
• Department: Environment
• Course: ENVR 1000
• Professor: Goodman

Document Summary

Toxicology: the study of poisons/toxins and their effects on organisms. Toxins can be either synthetic (human made) or natural. Environmental (eco)toxicology: includes toxicology as well as the additional investigation of the environmental factors influencing exposure dynamics: One of the most common uses of toxins an a basis for ecotoxicological studies is in the development, testing, and use of pesticides. Pesticides are used to protect crops, plants, livestock, domestic animals and humans from damage and disease caused by microorganisms, fungi, insects, rodents and other pests and remove competitor plant weeds from crops. It is an undesirable competitor, parasite, or predator that interferes in some way with human welfare or activities. It could still have an important connection within the ecosystem . Bioaccumulation and biomagnification: build-up of persistent fat soluble chemicals in the body over time. Acute exposure: symptoms develop rapidly following exposure and absorption, usually includes exposure to large amounts of a chemical.