CIZMAS PHLT 304 EXAM 1 UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS

CIZMAS PHLT 304 EXAM 1 UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS

Question:
1. What is the Epidemiologic Triad? Or "Epithriad"
Answer:
Host/Agent/Environment *Vector may be part of disease process. *We are all interconnected *Effects of
environment changes on humans and other species.




Question:
2. What is are examples of natural environmental contamination?
Answer:
Not caused by humans *Volcanos *Soil Deposits *Natural Seepage *Fires

Question:
3. Can environmental contamination be anthropogenic? And what does that mean?
Answer:
Yes. Anthropogenic pollution is caused by humans. (This is what ppl consider pollution)

Question:
4. What are examples of contaminants in the air? **** AIR QUALI- TY AND CONTAM- INANTS
Answer:
*SO2 *Volatile organic compounds *NOx +Ozone (O3) *Carbon Monoxide *Lead *Particulate matter
*Rising carbon dioxide (CO2)

Question:
5. Scientific consensus ______ on the existence of climate change and its effects
Answer:
Agrees

Question:
6. Climate Change= increased likelihood of what?
Answer:
Weather events

,Question:
7. What kind of affect does climate change have on the environment?
Answer:
Downstream effects

Question:
8. What does the changing climate mean for us?
Answer:
*More extreme weather *Food and water scarcity *Emerging diseases *Reduced ecosystem services

Question:
9. What are water contaminates?
Answer:
Inorganic contaminants, e.g., Lead, As, Hg Organic contaminants (organic= contains carbon)

Question:
10. What are some waterborne illnesses?
Answer:
*Protozoan parasite Cryptosporidium *Hepatitis A *Cholera

Question:
11. What is Eutrophication?
Answer:
Water body receives excessive nutrients
*Overgrowth of Algae *Algae die and decompose, depleting O2 in the water*Lack of O2 kills aquatic
animals

Question:
12. What is Bioaccumulation?
Answer:
the accumulation of a toxic chemical in the tissue of a particular organism

Question:
13. What is Biomagnification?
Answer:
*occurs through food chain * Biomagnification results in dramatically increasing concentrations of a toxic
chemical in the bodies of animals as you go up the food chain
(highest concentration at the top)

Question:
14. Mercury increases ______ the food chain.
Answer:
Up

Question:
15. Where do we get high doses of mercury from in our diet?

, Answer:
Fish

Question:
16. What is zoonosis and give an example of something that does it?
Answer:
Humans getting disease from animals
ex: plague *tb *Lyme disease

Question:
17. What is the "One Health" approach (CDC)
Answer:
*recognizes that the health of people is closely connected to the health of animals and our shared
environment
*Often discusses re. zoonotic diseases;
---eg, vaccinating animals for rabies protects humans
One health can be expanded: the health of our shared environment affects human health

Question:
18. What are ecosystem services? And list them (RegProSupCul)
Answer:
Functions of natural Earth systems that give humans value for free
Include: *Regulating services *Provisioning servicies *Supporting or habitat services *Cultural services->
Benefits of Nature

Question:
19. What are regulating services?
Answer:
Help keep world climate and resources stable Often invisible and taken for granted until disturbed.
EX: *Maintaining quality of air, soil, and water *Moderating global climate *Regulating water flow
*Pollination
KEEP ENVIRONMENT LIVABLE!

Question:
20. What is an example of regulating services?
Answer:
Flood control

Question:
21. What is an ecosystem engineer? What is an example of ecosystem engineers?
Answer:
Species that change biotic or abiotic materials to influence habitats
EX: Beaver Dam construction by beavers can help restore agricultural land to wetland habitat

Question:
22. Regulating services (pollination)