Environmental _______ has increased dramatically over the pastdecade.A) conceptionB) id

The generation gap has become wider than before because of ______.A．the increasing depende

The number of these families has increased ______ 40 percent in the past ten years.

A huge amount of environmental damage has been brought_____by the destruction of the rainf

A______division of labor has contributed most to the increase of production, promoted gene

So far environmental protection has left much room ______ ; lumbering and hunting have don

Once environmental damage_____, it takes hundreds of years for the system to recover.A．has