【正文】
s, nature is given to us, and we earn it by contributing to it. however, most people nowadays just want to ask for more from the nature. in fact, they do very little contribution to the nature. therefore, the environment around us is being worse and worse. do you often use batteries? then do you know it takes 50 times more energy to make them than they produce? and just one simple battery can pollute as much water as a person can drink in his whole life. the facts and figu