NATS1516

Question 1

Define herbicides , fungicide, insecticide

Answer 1

Herbicides kills plant growth
Fungicide kills fungi growth
Kills insecticide

Question 2

What is the dominant anthropogenic source for each metal we discussed ( mercury, cadmium, lead) to atmosphere

Answer 2

mercury = coal
Cadmium= Smelters/coal
Lead = smelters/coal

Question 3

What event put groundwater pollution on the “MAP” and describe what happened

Answer 3

Love canal, company dumped toxic waste into abandoned canal , that contaminated the groundwater and caused health issues for the people living in that area

Question 4

Describe 3 reasons why pesticides are used globally ( despite their drawbacks )

Answer 4

Public health
Agriculture
Forestry

Question 5

True or false : wastewater discharge by industrial operations are some of the worst sources of water pollution

Answer 5

(TRUE) because it has a lot of harmful pollutants like heavy metals , organic matter etc, which can impact the environment and human health.

Question 6

How is waste from pulp and paper mills treated

Answer 6

= pre-treatment, primary treatment, secondary treatment, tertiary treatment

Question 6

How is waste from pulp and paper mills treated

Answer 6

= pre-treatment, primary treatment, secondary treatment, tertiary treatment

Question 6

How is waste from pulp and paper mills treated

Answer 6

= pre-treatment, primary treatment, secondary treatment, tertiary treatment

Question 6

How is waste from pulp and paper mills treated

Answer 6

= pre-treatment, primary treatment, secondary treatment, tertiary treatment

Question 7

What are the 2 forms of mercury? What spices of mercury is most dangerous and why

Answer 7

= inorganic, organic , methyl mercury. Methyl most dangerous because it’s really easy absorbed by the body and moves freely in the body and can cause brain damage / through breast milk

Question 8

Which spices in an aquatic ecosystem would be most vulnerable to toxic metal spices

Answer 8

Benthic

Question 9

Should we eat fish high on the trophic level often, why or why not ?

Answer 9

Because they have very high concentration levels of toxins like mercury

Question 10

Define the difference between unconfined and confined aquifers

Answer 10

Unconfined aquifers are filled with water that freely flows to the surface
Confined aquifers are filled with water that is held in place by impermeable layers of rock or clay

Question 11

Describe the specific impacts of pesticide use on an aquatic community

Answer 11

= non-target, contaminate, groundwater, biomagnify

Question 12

Pick a source of groundwater pollution ( except fracking) and describe how it leads to pollution

Answer 12

septic tanks, Bacterial and nutrient pollution from septic tank leakage Contamination of groundwater and surface water, Damage to aquatic ecosystems.

Question 13

Describe how fracking leads to groundwater pollution

Answer 13

Migration of methane and other gasses into groundwater
2. Disposal of wastewater containing chemicals used in fracking into groundwater
3. Leaking of brine and other toxic substances into groundwater.

Question 14

Describe a biological control to synthetic pesticide use

Answer 14

Ladybugs reduced the pest population,

Question 15

Between the sulfite process and the sulfate/ kraft process, which produces more BOD, and which is in acidic solution? Which handles variety of wood types

Answer 15

More BOD : Sulfite
Acidic = sulfite
Greater variety of wood types= sulfate Kraft

Question 16

List the 3 pollutants that are emitted by almost all industrial operations ?

Answer 16

BOD, SS, toxic substances

Question 17

Explain how coal combustion can lead to groundwater pollution

Answer 17

Through toxic chemical from coal ash and other waste into groundwater, coal mining activities by releasing heavy metals into groundwater

Question 18

What is an oxygen sag and how does it happen

Answer 18

An oxygen sag is a decrease in the amount of dissolved oxygen in a body of water due to the consumption of oxygen by microorganisms that decompose organic matter, which can lead to negative impacts on aquatic life.

Question 19

Characteristic decline and subsequent rise in oxygen levels following industrial discharge

Answer 19

= Oxygen sag curve is pattern of decreasing and then increasing levels of dissolved oxygen in water caused by microorganisms consuming organic matter in wastewater discharge from industrial sources