Презентация по английскому языку для учащихся 11 класса "Water pollution"

Water pollution

Water pollution

Greece, Spain and Germany have the cleanest coastal waters.

The Sarno (Italy) is the most polluted river in Europe

Asian rivers are the most polluted in the world.

Lithuania and Estonia have the dirtiest coastal waters.

"Man is a complex being; he makes the deserts bloom and lakes die.“ Gil Stern

Pesticides are carried in rainwater from farm fields, suburban lawns, or roadside embankments into creeks.

Results:
affect and damage the nervous system;
cause liver damage;
damage DNA and cause a variety of cancers;
cause reproductive and endocrine damage;
cause other acutely toxic or chronic effects.

"Society, my dear, is like salt water, good to swim in but hard to swallow."— Arthur Stringer, author, The Silver Poppy

Mercury comes through air pollution from industrial plants. In the water, the elemental mercury is converted to methylmercury by certain bacteria, after which it moves into food through a fish.
Young children and fetuses are most at risk because their systems are still developing.
Mercury causes neurological problems, including slower reflexes, learning deficits, delayed or incomplete mental development, autism, and brain damage.
Mercury for adults is also a problem, causing:
central nervous system effects like Parkinson's disease, multiple sclerosis, and Alzheimer's disease;
heart disease;
death or irreversibly damaging areas of the brain.

PCBs, Dioxins, and Other POPs

PCBs polychlorinated biphenyl –
dioxins - poisonous chemical by-products of the manufacture of certain herbicides and bactericides
POP - persistent organic pollutants tend to collect in the fatty issues of animals.

Control of water pollution

Industrial Wastewater Treatment

Some of these facilities remove the toxic components, and then send the partially-treated wastewater to the municipal system.

Dissolved air flotation system for treating industrial wastewater.

Agricultural Wastewater
Treatment

Thank YOU =)

turn off faucet while cleaning teeth

Think about Water!!!