destruction - when something is destroyed, contamination - when something is made dirty or less pure, emission - when gas heat etc. produced or sent out, variation - when the amount or level of something changes, extinction - when a plant or animal stops existing, conservation - when you protect the natural envirorment, deforestation - when trees are cut down in an area,

Tauler de classificació

Estil visual

Opcions

Canvia de fonament

Restaurar desada automàtica: ?