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三!七八九九八三
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leached out,
(vi) What would be the effect.cn.
the number of clean water arinal's e.g. fish if the domestic sewage had been
(2) Better
soil. because present.
are
(1). not water from
desalination plant.
{2} sewage from a tannery?
Solution:
1 (1)
Explain your answer.
To compare the capillarity of sandy and clay soil.
(ii) Day 3.
EXES 3500
The amount of decomposable organic material Sncreases sharply at the polat er The sewage is added. Becaus the domestic sewaged comdal
a lot of organic malad decreases slowly
normal because of
action..
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四穡貫公路、花深山港文化村政
捷威旅行社
韓國
(vi)(1) The number of clean water animals may decrease rapidly due to fall in oxygen content in hot water and death caused. by hot water, Certain clean -water animal species. may increase in number due to death of predators caused by hot water:
·韓國四天豪華團
漢城溷陽五天團国 特點:
(2): The clean water animals
decrease in number/since
from sewage
tannery may
contain poisonous chemicals.
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暢遊漢城、景福謝、無絡村、華克山莊、關仁 滑雪場、86年奧運墩及避高溫等
■、回程可留台北
‧享受帝王式依生晚宴P
七國民筆中
寶教日四廿月正年已己腦專
經装了一段長時期的華化過程而成假富有民族特色的中
通佛教古樂。
1989 中學會考預習專欄
明德出版社
Pollution
MILL & DALE PRESS:
·Geography (22)
P. F. Chan
(A) A good and balanced environment:
People's perception varies, but which elements common. constitute such an environment
some
a) clean air
b) clean water
c) clean and
d).serenity
e) safety
(B) Pollution
xuality.
undesirable changes in the of the natural environment. asa.result,of population growth. economic development, increased technological. Capabilities And rising standard of living,
(C) General causes of pollution
(1) Urban development
-high concentration of human, and economic activities and transport systems. over
relatively small area.
1989 中學會考預習專欄
明德出版社.
MILL & DALE PRESS.
Biology (22)
A Cheuk
Inter-relationship of organisms with each other' and with their environment.
1. The diagram below shows the set up of an experiment and the results
were shown.jn the graph..
increase in energy consumption
and. amount of domestic ard: industrial waste..
(ii) Industrial development
oncreased use of fossil fuelse -power generation produces heat, waste gases, smoke and dust,
industry discharges. chemical untreated chemicals... increased road transport. -noise pollution associated with
machines.
(iii) Technological capabilities
- increase in energy consumption. increase in use of fossil fuel. rapid rate of exploritation of natural resources.
(iv) Societal appraisal of pollution until the last decade, most people were not aware of the acologice [consequences pollution).
'sacieties are short- consider 'sighted and do not
pollution a serious problem,
(v) Population growth
-aggravate the problem
(5) Consequences of pollution.
fiazards to human health. Charm to living organisms.
harn to ecological systems. damage to amenities.
e.g.. .acid rain with sulphur dioxide (50) contaminates. water course. soils, ground water
and plants...
caven
難日僑華
(E) Pollution In Hong Kong
(1) Pain sources/
(1)
What is the aim of this experiment? (ii)'In which day is. the rise in water level the same in both 3011?
(1)
(iii) Describe and explain these
two curves:
(iv) State with reasoris, in which of these two scils you would expect to find
the
(1)
content ..
hí
42) better aerati
rich in organic scharged into a river:
at point theranges in chemical and biotic Factors
50me- istance downstream from the point at which the sewage enters the
are ::shown river
the graphs.
a) Domestic Sources.
doméstic sewage in coastal
waters, resulting in high level of coliform, stream pollutfor
serious ndise pollution in high-density residential
radios: areas.e.g. manjong games; conditioners.
b) Industrial sources
afr
the burning of.
-SO2 from
fossil fuels. -Carbon monoxide. Nitrogen oxica
in streams, harbour, coastal waters, toxic chemicals are cadmium, discharged, e.g.. mercury which are poisoncus to living organisms. piling, dr111ing.
c) Transport sources.
exhaust fures enitted by: motor vehicles particularly in areas of dense transport. networks, in peak traffic hours
and
traffic
congestion.
-accidential oil spielage.
airciraft
Airport.
morning.
d) Hural sources.
Kai Tak
-dumping of untreated
agricultural waste;
poultry manure in Yuen Long.
ammonta
leading to
content,
high Oxygen
depletion
the
Explain
-change. decombosable organic matter downstream.
A
(ii) Account "for the change
dissolved oxygen downstream with reference to the change in the number of saprophytic bacteria.
(ii) Whees
Tons (174
the
(NO3)
peak for
(iv) Explain why there is an aicaii
bloom at 40 kn down stream?
[v] At what distance downstream would you expect the number of clean water. aninalse.g.. fish be reduced to a minimum? Explain your answer.
三期星日一月三(九八九一)年八十七國民中(30)
and entrophication, making streams unsuitable for fish.
contaminated. water enters
the sea, especially serious
in englese bays, e.gi Tolo channel.
(F) Preventive
measures to control: environmental pollution in Hong Kong..
government has the responsibility to control.
→ citizens are responsible for
cooperation."
"several measures have been adopted: landuse (i) Urban planning and zoning..
an effective measure, urban renewal programmes.. polluting industries relocated..
are
eig the electric power station at North Point was moved: to Aplichau,
new town development. decertralization of industries.. reasonable separation between residential and industrial 1anduse.
sewage. treatment works. (ii) Legislation.
a) Air... pollution
legislation.mana
control.
stationary: sources by the Ain Pollution Control Ordinance. emission of dark smoke by the Air Pollution Control (Smoke) Ordinance.
vehicles by the Road Traffic Ordinance.
b) Noise pollution control
(iii) In. sandy soil, water level. 'rises rapidly in the first two days. This is because of the large air spaces which give little resistance to the rise of water. From the third to sixth days, water devel rises very slightly due to the little capillary effect in sandy soil.
(V)
In clay soil, water rises slowly but. continuous throughout. the experiment. This is because of the strong resistance to the rise of the large
e of clay soil capillary
draw Water upwards;
rgher nitrate content in.
Clay soil because nitrates
are strongly att
particles
legislation.
factory, Vehicle Construction, recreational, neighbourhood and Ventilation.System Noise.
c) Coastal waters polution control. → Tol's Channel Water Control Zone.
d) Stream pollution
of
se anti-pollution policy against
disposal .
untreated agricultural waste from livestock farms.
(111) Education of Citizers:
foster: citizen's personal concern and responsibility for the care of the environment, e.g. Clean Horng Kong Carpäign.. (iv) Monitoring pollution
Environmenta!:
Department.
monitoring stations:
Protection
e.g. Kwun Tong, Sham Shiu Po, (v) Recycting
-technical control.
conserve resources.
e.g. manure be recycled ta produce good fertilizens.
(vi) Treatment of emitted gases
and sewage
filtering of dust, smoke and gases..
e.g. incinerators fitted with electrostatic precipitators. setting up a network of sewage treatment works in New Towns.
(10) · The
concentration dissolved oxygen decreases at ppint. A: because of rapid. consumption by the large amount of saprophytic -bacteria added with the sewage. It increases slowly. back to normal as the amount cf. cirgenic: material and hence bacteria gradually decreases.
(iii) Nitrates are ammonium nitrification.
formed from ions:
as
(iv) Algal population increases as
serves nitrate which nutrient for growth of algae increase's.
- (v): Between
20
and 30 km downstream.
Oxygen 'concentration is minimum.
中盛宗教香襞的一支。佛教首樂源自印度,傳入中國斯納西大學 記帳,中心」的「食黎的「粤曲中消樂的研究」,法國巴黎大學皮 (文化剂恩)香港漫會科院音樂系將於三月十五至三硏究所田传的「從『金落梅』醤明代佛曲]香港民族音
L EV E R LNG的「中國之早Þ隱耱」、香港中 文大學的宗頤的從經唱導師粜第一種的「帝落天菜人
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八三月五日至八日,展出香港藝術中心)
R
noded
dlesai vac
cocomposabie
袁鴻梧作
alge
bacteria
HO
distance downstream in
7!me (days)
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