Transcript Sewage

Common pollutants in
the waters
• Sewage
• Oil
• Industrial wastes
• Plastics
Common pollutants in the waters
Sewage
Common pollutants in the waters
Sewage
• Contains wastes
from human beings
and livestock
• Encourages growth
of algae and
bacteria
• Can cause red tides
• May cause diseases
in human beings
Common pollutants in the waters
Oil
Common pollutants in the waters
Oil
• From accidental
spillage or illegal
dumping
• Stops air from going
into water
• Marine life may die
without enough air
Common pollutants in the waters
Industrial wastes
Common pollutants in the waters
Industrial wastes
• Wastes chemicals
discharged by
factories
• Poisonous and
harmful to
marine life
Common pollutants in the waters
Plastics
Common pollutants in the waters
Plastics
• Plastic bags and
other items
dumped into the
sea
• Harmful to marine
life
• Fish cannot eat any
food if plastics go
into their bodies