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BIOLOGY
Topic 7 - Ecology
Waste management
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Created by
Beauty Uthman
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Cards (11)
Biodiversity
The variety of all of the different species of
organisms
on earth or in an
ecosystem
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Biodiversity
is important as it makes ecosystems more
stable
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Over the last
100
years the population of humans has
increased
massively and the average standard of living has also increased
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Humans are using more of the earth's resources than ever before and are producing more
wastes
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Water pollution from human waste
1.
Sewage
containing urine and
feces
released into waterways
2. Fertilizers from
farms
polluting
rivers
and streams
3.
Toxic chemicals
from factories released into
rivers
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Sewage and fertilizers in rivers and streams
Causes dissolved
oxygen levels
to fall, killing
aquatic
organisms
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Air pollution from human activities
1. Burning
coal
in power stations releasing acidic gases causing
acid rain
2. Burning releasing
smoke
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Air pollution
Kills plants and animals, reducing
biodiversity
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Land pollution from human waste
1.
Millions
of tons of waste dumped in landfills destroying
habitats
2. Toxic chemicals
leaching
out of
landfills
polluting soil
3. Toxic chemicals dumped directly onto
land
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Waste from human activities
Reducing
biodiversity
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It is
extremely important
that we carefully handle our
waste materials
and dispose of them without harming the environment
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