244 Flashcards

1
Q

Types of bag

A

polyethylene
paper
reusable polyethylene
reusable polyethylene with recycle components

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2
Q

GHG with relative potential

A

CFC - chlorofluorocarbons
N2O - nitrous oxides
CH4 - methane
CO2 - carbon dioxide

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3
Q

most abundant anthropogenic GHG in atmosphere

A

CO2

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4
Q

man-made GHG

A

antropogenic GHG

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5
Q

climate change definition

A

overall changes that have resulted from increasing green house gases in the atmosphere

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6
Q

global warming definition

A

increase in global average temperature near the surface of the earth mostly due to GHG concentrations

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7
Q

Natural causes of climate change

A

volcanic eruptions
continental plate movement
variation in solar radiation
orbital changes

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8
Q

Why does northern hemisphere warm easier?

A

more land area

specific heat capacity of water is low compared to earth so land heats up faster that water

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9
Q

Effects of climate change

A

increased global temperatures
increased sea levels, coastal flooding, erosion
increased ocean temperatures
habitat destruction, loss of species
drought, heat waves
decreased food security and land crop yield
increase in extreme rain and weather events

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10
Q

Pillars of sustainability

A

social
economic
environmental

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11
Q

Ocean acidification

A

H2O + CO2 -> HCO3-
H2CO3
carbonic acid (not carboxylic)

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12
Q

Coral reef what happens

A

increase in ocean temperatures stress the coral
coral and algae have a symbiotic relationship where coral provides shelter and protection and algae provides food/energy
with this stress of warmer temperatures, coral kicks out the algae and the coral then bleaches
coral is now no longer suitable to protect/home species

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13
Q

Human health effects of climate change

A

spread of disease (malaria)
poverty
asthma
fatalities/injuries in extreme weather

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14
Q

limited evidence that GHG emissions affect:

A

tornadoes, hurricanes

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15
Q

Why can’t reflected heat get out

A

longer wavelengths after reflection

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16
Q

Source of methance

A

agriculture, landfills

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17
Q

Source of nitrous oxide

A

exhaust fumes, agriculture

18
Q

Source of CFCs

A

aerosols

fridges

19
Q

Relative volume of emissions by type of gas

A

CO2
CH4
N2O
CFC (tiny)

20
Q

Relative volume of emissions by sector (global)

A

electricity and heat
agriculture
industry
transport

21
Q

Relative volume of emissions by sector (NZ)

A

agriculture
energy generation
industry

22
Q

CO2 emissions by country

A
China
USA
EU
India
Russia
Japan
23
Q

EC

what?

A

emerging contaminant
potential pollutants that are not commonly monitored in the environment
may be in the environment
suspected of causing adverse effects

24
Q

Sources and effects of ECs

A

antibiotics, steroids, hormone supplements, disinfectants, repellants, pesticides
endocrine disruption, cancer, liver and kidney damage, antibiotic resistance

25
Q

EDC

what?

A

endocrine disrupting compounds
natural or man made compounds which fits into hormone receptors, blocking the normal hormone or acting instead of the normal hormone in an irregular manner

26
Q

Effects of EDCs

A
reproductive disorders
early puberty, growth disorders
reduced fertility
brain, behavioural problems
skewed male/female ratio
27
Q

Examples of EDC effects

A

Renal gland of vultures fucked

Delayed development of tadpoles

28
Q

Triclosan

A

example of EDC
antibacterial and antifungal agent in soaps and cosmetics and toothpaste
mimics thyroxine (thyroid function)

29
Q

BPA

A

chemical used in plastics including water bottles

can seep into water and affect brain and behavioural function

30
Q

Drivers of pollution

A

industrialisation
globalisation
population increase

31
Q

Pollution definition

A

undesirable change in the physical, chemical and biological characteristics of water, air and soil that may harmfully affect human, animal and plant life, industrial process, living conditions and cultural assets

32
Q

Types of pollutants

A

persistent and non-persistent

biodegradable and non-biodegradable

33
Q

Persistent vs non-persistent pollutant

A

persistent are difficult to degrade, remain in state for a long time, include plastics, pesticides, radioactive waste
non-persistent are easy to break down to simple structures and mix in soil, some are biodegradable, include garbage, agricultural waste

34
Q

Biodegradable vs non-biodegradable

A

biodegradable pollutants occur as organic compounds and can be broken down by biological processes
non-biodegradable pollutants do not get biologically degraded over short periods of time

35
Q

Causes of pollution

A

Man-made
Rubbish, sewage, pesticides, noise, exhausts
Natural
volcanic eruptions, flooding, bush fire

36
Q

Impacts of pollution

A

health
loss of natural habitat and biodiversity
peace/security
depletion of natural resources

37
Q

Causes of land degradation

A
deforestation
farming
temperature increase
pollution
urbanisation
over grazing/cultivating
38
Q

Effects of land degradation

A
loss of natural habitat
species endangerment and extinction
desertification
poverty
bulk migration
39
Q

Causes of loss of biodiversity

A
HIPPO
Habitat destruction
Invasive species
Pollution
Human population
Overharvesting
40
Q

Effects of loss of biodiversity

A

species endangerment and extinction (blue whale, orangutang, tiger, asian elephant)
reduced sources of food