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Ch. 14 Env Hazards

Environmental Ecology- Environmental Hazards & Human Health

TermDefinition
Biological Hazards Bacteria, viruses, parasites
Chemical Hazards Pollution of air, water, soil, & food
Biological Hazards can be put into two categories: 1. Non-transmissable 2. Transmissible
Non-transmissable Not from human to human ex: cancer, diseases, diabetes, asthma
Transmissible Infectious or contagious- pathogens/vectors ex: Bacteria, viruses, parasites
7 Deadliest Infectious Diseases 1. Flu- virus 2. HIV/AIDS- virus 3. Diarrheal Diseases- bacteria, viruses, parasites 4. TB- bacteria 5. Measles- virus 6. Malaria- parasite 7. Hépatites B- virus
Top 7 Infection Diseases Causes 11+ million deaths per year
TB (Tuberculosis) (bacteria) destroys lung tissue 33% people worldwide infected 10% will eventually become sick Anti-biotics- can develop genetic resistance
Lyme Disease (vector) get from ticks Rocky Mountain Spotted Fever is also caused by ticks.
Staphylococcus "Staph" Infection (bacteria) open cuts get infected Anti-botics
Flu (virus) number 1 killer 3 Million deaths per year Passed through body fluids/airborne transmissions
Chickenpox (virus) can pop up later in life- shingles Shingles deals with nerve infection
HIV/AIDS (virus) Human Inmuno deficiency Virus- can become active and cause AIDS- Active Immune deficiency Syndrome T-Cells count goes down due to immune system 2 Million deaths per year
Hepatits B (virus) attacks the liver 1. Needle sharing 2. Blood transfusions 3. Unprotected sex 4. Pregnant women's placenta
West Nile Virus (virus) passed on through infected birds---> mosquitos---> human Can cause spinal meningitis (virus)
SARS (virus) Severe Acute Respiratory Syndrome- produces flu like systems brought from China in 2002- passed on person to person and can lead to pneumonia then death
Epidemic Local disease in one country
Pandemic Worldwide disease
Most Dangerous Viruses 1. Flu 2. HIV/AIDS 3. Hepatitis B
WHO (World Health Organization) Job is to educate individuals on transmissible diseases.
Bacterial Meningitis Causes spinal cord and brain damage
Created by: ginganinjaem
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