Dadas as sentenças:Until scientists started talking about gl...

Dadas as sentenças: Until scientists started talking about global warming, most people hadn’t known much about the damage their cars and industries were causing. When the price of gasoline becomes enough expensive, Brazilians can fill their cars with ethanol. In the next few years, we’ll have to come up with new sources of energy to replace the harmful ones we have now. Europeans has used coal as their primary source of energy until inventors and scientists found new solutions. Assinale a alternativa que indica todas as afirmativas corretas.