Fill in each numbered blank with one suitable word or phrase Conservation is the safeguarding and preservation of natural resources, so that they can continue (1)……… and enjoyed. In the past, most people believed that the world's resouces could never be used up. Today, we know that this is not true. An important part of conservation is the (2) ……… of waste - waste of forests, soil, wild-life, mineral and human lives. As important is the fight (3) ……… pollution of our environment , in particular, the dirtying and poisoning of air and water. Conservation is (4) ……… concerned with the reclaiming of land by (5) ……. . deserts, draining swamps or pushing back the sea. Question 5.