Слайд 2
![Water pollution occurs mainly when people overload the aquatic environment,](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/249851/slide-1.jpg)
Water pollution occurs mainly when people overload the aquatic environment,
streams, lakes, underground waters, bays and seas, waste or substances harmful to living beings.
Слайд 3
![Plants and animals need relatively pure water, and they will](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/249851/slide-2.jpg)
Plants and animals need relatively pure water, and they will
not survive if there are toxic chemicals or harmful microorganisms in the water. Water pollution kills a large number of fish, birds and other animals.
Слайд 4
![People who drink polluted water can get sick (cancer, infectious diseases, health problems in future children).](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/249851/slide-3.jpg)
People who drink polluted water can get sick (cancer, infectious
diseases, health problems in future children).
Слайд 5
![*Have you asked yourself the question, do the wastes fall](/_ipx/f_webp&q_80&fit_contain&s_1440x1080/imagesDir/jpg/249851/slide-4.jpg)
*Have you asked yourself the question, do the wastes fall into
the ocean?
It turns out 75 g dry weight in solid form per person per day fall into the ocean, and in the world live more than 6 billion people.