A．Nature changed our environment over the years.B．We must avoid wasting resources and

A．The change of lifestyle.B．The change of the nature of occupations.C．The increase of

It is important to ______our awareness about environment protection.A. improveB. makeC.

The nature of work is changing. Recent technological advances, a shift from manufacturin

There is a belief that man is trivial______nature and can never change global climates.A．r

A Threat to Our Environment （1)目前我国所面临的又一严重的环境问题是…… （2)造成这

Change—or the ability to adapt oneself to a changing environment—is essential to evolution