Term | Definition |
Malaria | Caused by a protozoan (waterborne) parasite
Protozoan Parasite-->Mosquito-->Human
Female Anopheles Mosquito carries the disease.
1/5 at risk, destroys RBC- brain damage, #1 killer, no vaccine. |
Caused Spread of Infectious Diseases | 1. Forest Clearing--> spread of vectors
2. Illegal trade of wild species (exotics)
3. Global trade of livestock & food |
Reduce the Spread of Infectious Diseases | 1. Reduce unnecessary use of antibiotics
2. Improve drinking water quality
3. Draining of swamps & marshes (breeding sites for vectors) |
Chemicals Hazards | Two categories...
1. Hazardous Chemicals
2. Toxic Chemical |
Hazardous Chemicals | Can Cause harm to humans/animals
1. Flammable
2. Explosive
3. Irritate
4. Toxic cause sickness/death |
Human System Affected | 1. Immune System
2. Nervous System
3. Endocrine |
Immune System | 80% is controlled by digestive system
WBC's produce antibodies to fight antigens (produced by bacteria/viruses) |
Probiotic | Helps restore good bacteria in digestive system. (Acidophilus) |
Nervous System | Destroy nerve cells
Neurotoxins- PCB's- chemicals used in industry; lead; mercury; pesticides |
Endocrine | System that produces hormones
Effects sexual reproduction, growth, behavior/learning |
Toxic Chemicals | Chemicals that cause temporary/permeant harm/death to humans/animals
1. Mutagens
2. Teratogens
3. Carcinogens |
Mutagens | Produce genetic changes in DNA (mutations)
Ex. Cancer
Nitrates- Food preservatives |
Teratogens | Chemicals that cause harm & birth defects to fetus/embryos
Ex. Alcoholic beverages, chlorine, lead, mercury, PCB'S |
Carcinogens | Chemicals that produce cancer (cells divide erratically-->tumor--> met (spread) |