Substances in the Environ
Give an example of an organic compound
(Anything made from something living)
1000 times more
What are the 3 stages of pollution transport?
release, dispersion, deposition
Define: Bioindicator species
Organisms which are extremely sensitive to negative changes in water quality.
13 ppb means 13 parts chemical in...?
1 000 000 000 parts water
Give an example of an inorganic compound
(Minerals, rocks, plastics, something NOT from a living thing)
An increase in nitrates and phosphates into a body of water would mean an increase of what else? (2 things)
- increase in algae
- increase in decomposers
Airborn pollutant would travel FARTHER if... (4 possible answers)
Lighter weight
Slower wind speed
Less precipitation
Warmer the temp
Define the term: “LD50”
The dose of chemical required to kill 50% of a population.
What does caustic mean?
A strong acid or base that burns skin
What is the role of carbohydrates in human nutrition?
Carbohydrates act as an energy source
Will the phosphate and nitrate concentrations will increase or decrease as you move away from a source of fertilizers,
Decrease
A pollutant travels FARTHER in water if... (3 things)
The pollutant is soluble in water
The pollutant is lighter
The water is travelling faster
Increased concentrations of chemicals or elements as they move up the food chain.
Does cold water or warm water contain more dissolved oxygen?
Cold!
Order the following in INCREASING concentration:
2 ppm
10 ppt
2 ppb
10 ppt, 2 ppb, 2 ppm
Write the neutralization reaction.
Acid + Base --> Water & Minerals
What 2 major supplies do they use to make a sanitary landfill?
Plastic & Clay
Define phytoremediation
Using plants to reduce the concentration of harmful chemicals in soil or groundwater.
What is effluent?
Wastewater (sewage) from a household is that is discharged into the environment (usually a water ecosystem), whether it is treated or not.
What are the three organic compounds that plants and animals need to survive?
Carbohydrates, Lipids, Proteins
Name at least 2 things that are put in our trash where heavy metals could come from.
Batteries, rubber tires, pipes, paints, thermometers, electronics...
Any material that fluid can flow through is called...?
& Give and example.
Permeable. (rocks, gravel, sand, fabric)
Define leachate
Water that mixes with chemicals and then moves into the ground. (from a landfill)
How do plants uptake their nutrients?
How do humans uptake their nutrients?
Plants - absorb
Humans - ingest & absorb