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"It's All of Us" is a story about how ordinary teenagers can change their city for the better. One day, Andrey and his friends find a lot of dead fish on the seashore. They try to find out the causes of the environmental disaster and find ways to solve it. Readers will learn about dolphins and marine pollution, about volunteers and waste sorting, how to collect signatures for petitions and shape public opinion. This is a book about love for animals and nature, true friendship and the desire to change the world.