When any type of fuel is burnt, lots of different chemicals are produced.Some of these gases react with the tiny droplets of water in clouds. The rain from these clouds is known as "______ ________".

Your _____ _______ is the sum of all emissions of CO2, which were induced by your activities in a given time frame

___________ is an adjective used to mean causing little or no damage to the environment and therefore able to continue for a long time.

Global temperatures will continue to rise for decades to come, largely due to _____ ______ produced by human activities

Nowadays ______ cars are becoming more common because they comsume less fuel

Global __________ will continue to rise for decades to come, largely due to greenhouse gases produced by human activities.

Without a way to reduce waste at the ________, the city ordered an expansion of the pit for another two miles

___________ energies (sun, rain, wind, tides,waves and heat) are sources of clean, inexhaustible and increasingly competitive energy.

The three most important _____ _______ are coal, petroleum, and natural gas

I have a ________ _______ _______ which I always use when I go shopping

An __________ ________ is a species which is very likely to become extinct as for example the tasmanian devil or the red panda

Madrid has had pollution issues for years. An almost permanent halo of ____ hovers over the city