Zusammenfassung der Ressource
Biology - B3 - AQA -
GCSE - Pollution
- Acid rain
- Direct damage
- Acid rain kills leaves and may
destroy roots erodes buildings
and statues. Huge problem
across Europe and America.
- Indirect damage
- Seeps into lakes and other
bodies of water, making
them more acidic which kills
all life in it - "Dead Lakes"
- Nitrogen oxides and sulphur
dioxide - combines with water
droplets and falls as acids rain.
- Global
dimming
- Particulates form a barrier that
blocks and reflects sunlight,
preventing it from reaching the
Earth. Less sunlight - colder.
Less sunlight - affects
photosynthesis - affects
oxygen release and carbon
dioxide intake.
- Certain animals will migrate for
winter, but if the country is stuck
in an eternal winter then these
animals may never return. This
could potentially upset the food
chain for this area.
- Global
warming
- Greenhouse Gases trap sunlight in the
Earth, heating up the atmosphere. This
can cause damage to the Earth - sea
levels rise and flood low level
countries. This can lead to more rain
and more natural disasters.
- Water pollution
- Sewage
- Aesthetically
unpleasing
- Microorganisms decompose
sewage in water, using oxygen
for aerobic respiration. Other
organisms may be unable to
respire because of this.
- Eutrophication
- Fertilisers from farming seep into the ground and are
washed away to rivers and streams. When they come to
rest, plants in these bodies of water will experience
extreme growth. Algae on the surface on the water will
grow too, eventually to the point where it blocks all
sunlight reaching the plants below. As a result of this,
these plants beneath will die. Microorganisms (detritus
feeders) will decompose the dead plant matter, respiring
aerobically. Oxygen in the water will be replaced with
carbon dioxide. This makes the water anoxic and acidic
and organisms in the water will eventually die. The body
of water is known as a 'dead lake' when this happens.