Oil, ____ and natural gas are ____. They are formed over ____ of years from the remains of dead animals and ____. They are ____ - this means they cannot be ____ as quickly as they are being used.

Fossil fuels

podle

Výsledková tabule/Žebříček

Vizuální styl

Možnosti

Přepnout šablonu

Obnovit automatické uložení: ?