Enviro Test #3 Flashcards
Why is solid waste a modern problem?
The ‘single-service era’ created a drastic increase in the amount of waste generated. Americans generate 230+ million tons of municipal solid waste every year
•4.5 lbs per person per day
This is what the slide says?
5 legal methods of solid waste disposal
Municipal incineration, source reduction, recycle and reuse, landfill, pyrolysis(baking your garbage)
Process of composting
Removal of non-biodegradable items Biodegradable waste is grinded to increase surface area Waste is turned to allow aeration Moisture can be added Sludge can be added
Mosquito development process
Eggs laid on water or just above water line
Larva and pupa stages of development occur in water but need access to air
Adult stage is the flying insect
prefer temperature of 80-90*
Methods of rodent control
Eliminate food source
Eliminate breeding and nesting places
Rat/mice proof buildings….L-shaped foundation
Sponging mouth part insects
Flies
Not sponge mouth part insects
tick, flea, lice
Biting insects
Mosquito, fleas, ticks, lice, some flies
what insects Don’t bite
Some flies, cockroach
Reason for itching with scabies
crushing of lice contaminates bite site from scratching
House fly breeding
Keep solid waste managed
What is the definition of Toxicology
study of poisons
What is environmental toxicology
focuses on the adverse effects of pollutants on ecological systems
what is regulatory toxicology
utilizes data from various types of toxicology in studies to set exposure standards
what is forensic toxicology
deals with the harmful effects of chemicals form a medico-legal perspective
What is a threshold dose?
dose at with response can be measured.
methods of generating energy without producing by products:
Hydroelectric- Wind power solar power geothermal power wave power
Measuring radiation levels
Most familiar operate on the principle of gas ionization… the GM counter, proportional counter, ionization chamber instrument. scintillation detector is primarily a laboratory based instrument. dosimeter indicates cumulative exposure indicates cumulative exposure to radiation over time.
Entry route
inhalation, absorption, ingestion, parenteral(injection)
Threshold dose
The dose at which a response can be measured
Disposal of low-level radioactive waste in the U.S.
Hazardous Waste Disposal via Secure Landfill
Chemical/Physical/Biological Treatments:
▪Chemical: neutralization (making materials inert), precipitation (condensation of a solid from a solution during a chemical reaction), solidification (turning the liquid into a solid), or oxidation reduction (changes the structure of the substance)
▪Physical: evaporation or compaction
▪Biological: microorganisms used to decompose toxic organic compounds
Depleted uranium (as discussed in class)
Has to be changed to a powder form to be stored, and gets more radioactive over time.
(I think there might be more but this is what I had in my notes)
