(2) Illustrations on different water pollution sources
As was mentioned in the previous note, water pollution has various of causes, each cause leads the extent of the water pollution to different measures. Hopefully by using illustrations, it will be easier for students to visualize and memorize the causes and the relative consequences.
Sewage
Photo: During crop-spraying, some chemicals will drain into the soil. Eventually, they seep into rivers and other watercourses. Photo courtesy of US Department of Agriculture Agricultural Research Service (ARS).
Oil pollution
Photo: Oil-tanker spills are the most spectacular forms of pollution and the ones that catch public attention, but only a fraction of all water pollution happens this way. Photo courtesy of US Fish & Wildlife Service Photo Library.
Other forms of pollution:
Photo: Invasive species: Above: Water hyacinth crowding out a waterway around an old fence post. Photo by Steve Hillebrand. Below: Non-native zebra mussels clumped on a native mussel. Both photos courtesy of US Fish & Wildlife Service Photo Library.
To sum up
Life is ultimately about choices—and so is pollution. We can live with sewage-strewn beaches, dead rivers, and fish that are too poisonous to eat. Or we can work together to keep the environment clean so the plants, animals, and people who depend on it remain healthy. We can take individual action to help reduce water pollution, for example, by using environmentally friendly detergents, not pouring oil down drains, reducing pesticides, and so on. We can take community action too, by helping out on beach cleans or litter picks to keep our rivers and seas that little bit cleaner. And we can take action as countries and continents to pass laws that will make pollution harder and the world less polluted. Working together, we can make pollution less of a problem—and the world a better place.
Fine regards to: Flickr,expalinthatstuff
Elaine Q.
