Задание 2 к тексту "Pollution"
Составьте предложения, используя данные слова и словосочетания:
1.Sciences; is based on; physics, chemistry, biology, geography ; as ; ecology; such; modern ; and others.
2.Pollution ; not only ; water ; is harmful ; to fish, animals, birds ; as well ; to people ; but.
3.Essential ; water ; civilization ; is ; material ; the most ; of ; considered to be.
4.Have ; factories ; all ; purification ; large ; systems.