Crossword puzzle clue "renewable promises"

Here are the possible solutions for renewable promises clue

Answer
Clue
Relevancy
vows
Clue
Renewable promises
burt
Clue
Bacharach who wrote the music for "Promises, Promises"
neilsimon
Clue
"Promises, Promises" writer
orbach
Clue
1969 Tony winner for "Promises, Promises"
biodiesel
Clue
Modern renewable fuel
Definition
a biofuel for use in diesel engines
biogas
Clue
Renewable fuel derived from organic matter
Renewable fuel on some farms
Renewable fuel made from organic matter
Definition
gas obtained by bioconversion

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