Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
If viable, profitable algae-based biofuel production would have started to trickle in, it could have compensated, but now we know there will not be any such replacement for any lost hydrocarbon production in the future.