Eutrophication
Infectious Diseases
Toxicology
Pollutants in the Environment
Environmental Laws
100
Name the two pollutants causing eutrophication.
What are nitrates and phosphates?
100
What is the anticipated effect on mosquito populations with the current projections of a warming planet?
Their population/breeding grounds are likely to spread further north and south of the equator.
100
The dose of a chemical that is lethal to 50% of a test population of a particular species is the _______.
What is LD50 or LC50?
100
Which pollutant is released by coal burning power plants that biomagnifies in food chains?
What is mercury?
100
The statement below describes which law:
The EPA has established protective drinking water standards for more than 90 contaminants
What is the SDWA?
200
Name the two major anthropogenic sources of nitrates and phosphates.
What are fertilizer runoff and sewage?
200
Bacterial infections can be treated with _____1____, but viral infections can be prevented by ____2_____.
What are:
1 - antibiotic
2 - vaccine
200
Which of the following substances is most toxic?
Nicotine LD50 - 10mg/kg
Aflatoxin LD50 - 5mg/kg
Copper sulfate LD50 - 300mg/kg
Sodium chloride LD50 - 3000mg/kg
What is aflatoxin?
200
Lead is especially harmful to developing fetuses. Based off of this description, we know that lead is a _______.
What is a teratogen?
200
Prohibits the FDA from allowing the use of additives in food, drugs, and cosmetics that cause cancer in animals and humans
Delaney Clause
300
When the number of aerobic bacteria increases, the biological oxygen demand (BOD) _________.
What is increases?
300
What type of disease is malaria?
Protozoa/protist
300
Which lines (A, B, C, or D) have a threshold?
What is C & D?
300
Atrazine is a chlorinate herbicide that is used to selectively control annual grasses and broadleaf weeds before they emerge. It is able to mimic estrogen in mammal bodies and suppress normal biological male hormones. With this information, we know atrazine is a ______.
What is an endocrine disruptor?
300
The Clean Water Act says that bodies of water in the US need to be _____ and _____.
What is fishable and swimable?
400
Why is cultural eutrophication a larger problem in developed countries relative to developing countries?
What is because of a larger use of synthetic fertilizers on farms and/or less manure used for fertilizer?
400
Name three types of diseases carried by mosquitoes.
What are:
West Nile Virus
Zika
Malaria
400
What does the dashed line at 5% represent?
The natural rate of death
400
Name two of the ways that wastewater treatment plants can disinfect the water to kill bacteria?
What are:
Chlorine
Ozone
UV light
400
Act established after the Love Canal accident.
What is CERCLA/Superfund?
500
Order the following events of eutrophication:
A - Release of nitrate and phosphates.
B - Algae bloom occurs (overgrowth of algae).
C - Aerobic bacteria pop. increases → demands more DO → increase BOD
D - Hypoxic (little O2) or Anoxic (no O2) conditions.
E - Algae dies and sinks.
What is:
1. A
2. B
3. E
4. C
5. D
500
Of the following, list the infections caused exclusively by bacteria.
Plague
Tuberculosis
Malaria
West Nile Virus
HIV
SARS
Zika
Cholera
What are:
Tuberculosis, Plague & Cholera
500
Of the following contaminants, which one has the lowest LD50 for humans?
Lead, mercury, BPA, arsenic, PCBs, DDT, phthalates
What is mercury?
Has a LD50 of 1mg/kg
500
If a wastewater treatment plant only does primary and secondary treatment of wastewater, name THREE pollutants released into waterways?
What are nitrates, bacteria & phosphates?
500
Name two things RCRA aims to do
What are:
1. Sets design for sanitary landfills.
2. Cradle-to-grave management plan for hazardous substances.
3. Regulates underground storage tanks for especially hazardous waste.