Review pre a1
Help
_l___ _a_____ is the regular increase in world temperatures
Global warming
_____n __i_____s are produced from the burning of coal, oil or wood.
Carbon emissions
People who cycle to work help to _____e p________ in cities.
reduce pollution
Unlock this slideshow and over 2 million more with Baamboozle+
Try slideshows
Your experience on this site will be improved by allowing cookies.
Allow cookies