I don't think fossil fuel has a Filipino translation. And since Filipino is  actually tagalog + a little bit of English, fossil fuel is accepted. When writing essays or other stuff like that, you should italicize foreign words like this.
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The Brainliest Answer!
Some words really are not accepted to translate another language. Just like the word 'fossil fuel', this word cannot be translated to filipino language.
So, there's none.
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