6/ “Friends of the Earth” is concerned about the …………… of the natural environment.(conserve)
7/ It is a purely ……………… question.(academy)
8/ Water …………….. is increasing this summer.(consume)
9/ We should not use energy ……………… to save the natural resources.(waste)
10/ The rising level of air pollution has caused concern among ………………….(environment)
conservation
academic
consumption
wastefully
environmentalists