A carbon f-------------- is the total amount of greenhouse gases (including carbon dioxide and methane) that are generated by our actions.

Cutting down trees without restrictions brings about d-------------------

Don´t leave the water r--------------- when you´re doing the dishes.

C----------- ch------------ is the most evident effect of global warming: temperatures aare becoming more extreme all over the world.

It´s vital to use r--------------- energies like the solar one because they pollute less than the traditional sources of energy.

S--------------- energy is energy that we will never use up or deplete. It is inexhaustible, like , for example, the kind we get from wind, sun or water.

S------------ is air pollution that reduces visibility. It is a mixture of "smoke" and "fog".

It´s important to r----------------- glass, plastic and paper in the right containers.

Don´t leave the water r--------------- when you´re doing the dishes.

F------------ are strong, unpleasant, and sometimes dangerous gas or smoke like , for example, the ones released by cars.

The main effect of the melting of the Poles is the sea level r----------

Using cloth bags instead of plastic ones is environmentally- f----------

An e---------------- species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction