LD50 + Legislation
Pathogens
Landfills & Sewage
Pollutants
Miscellaneous
100
LD50 is defined as the ____________ which kills ___________ of the TEST population.
dose; 50%
100
The vector for malaria is this.
What is a(n) (Anopheles) mosquito?
100
Incineration as a means by which to get rid of trash is considered a poor option due to causing this.
What is air pollution?
100
Synthetic, carbon-based, fat-soluble pollutants that aren’t easily metabolized by organisms bodies describes this type of pollutant.
What are persistent organic pollutants?
100
Warmer water has __________ dissolved oxygen than colder water.
What is less?
200
Scientists began with 50 mice. They gave the unfortunate mice a chemical. The LD50 can be determined by the dose at which ____________ mice are remaining. (give specific number of mice)
What is 25?
200
Plague is carried by this vector.
What are fleas?
200
Approximately 60 percent of municipal solid waste in the United States is composed of some form of organic matter that could be composted. Every American generates approximately 2 kg of waste every day. The amount of compostable waste that could be generated by one individual in a week would be closest to this.
What is 8.4 kg?
200
The buildup/concentration of persistent organic pollutants in the bodies of organisms over time is called this.
What is bioaccumulation?
200
You want to test the effects of increasing salt concentration on the germination of plant seeds. This is the independent variable.
What is salt concentration?
300
This environmental legislation allows for "cradle to grave" tracking of hazardous substances.
What is RCRA?
300
This compound, which can cause thinning of bird shells, is used as a preventative for malaria
DDT
300
This can be removed by primary sewage treatment
What are large particles, garbage, pebbles....
300
This is the increasing concentration per unit of body tissue of POPs in organisms at higher trophic levels
What is biomagnification?
300
You are performing an experiment to test the effect of different pH levels of acid rain on plant growth. This would be an appropriate control group.
What is ... plants watered with non-acidic water?
400
This is the most dangerous substance on this chart & why.
What is antifreeze - because it is a smaller dose of this than any of the others that kills an individual
400
Cholera is caused by _____________. Human health impacts include _________.
bacteria in water; diarrhea
400
Information gathered by a scientist abut the toxicity of chemical X and chemical Y showed that they had individual safe limits for fish at particular concentrations. But when they were used together at the safe concentrations, there were extensive fish kills. This is synergism. Based on this information, this is what a synergistic effect is.
What is an interaction in which the combined effects of things results in a greater effect than the sum of their individual effects?
400
This type of nonpoint pollution can lead to eutrophication.
What is inorganic fertilizer?
400
This pollutants mimic, block, or interfere with hormones.
What are endocrine disruptors?
500
Known for establishing Superfund sites, this environmental legislation allows the EPA to intervene in managing contaminated sites.
What is CERCLA?
500
This virus is also transmitted by mosquitoes, can cause birth defects such as small heads
what is zika
500
The final treatment step of removal of bacteria/viral pathogens during sewage treatment can include these methods.
What is chlorination, UV light, ozone...?
500
You are most unlikely to find fish at this point in the graph:
What is C?
500
This is the term for water that has leaked out through an area; in the case of a landfill, this water would be contaminated.
What is leachate?