A．Newspaper B．Carbon paper.C．Food wrapper.D．Waxed

A．To plant more fast growing trees.B．To find new materials for making paper.C．To devel

Which of the following can not reduce the amount of carbon ？A．Catching a bus.B．Cycling.C．D

What will the man probably do over the weekend？A．To visit his parents.B．To write a paper.C

What is true of a quality newspaper？A．It must be a national newspaper.B．It must have a cir

Which of me following can NOT reduce the carbon footprint？A．Catching a bus.B．Going cycling

How does the carbon dioxide affect the atmosphere？A．It causes the rise of temperature.B．It