Possible Clues:

• (In biology) series of changes in form that an organism undergoes
• Biological sequence, or what you'll find in the circled letters
• Provided during the French Revolution? How long a thing lasts!
• Biography series is about arrivals through to departures
• Jaques' speech describes this activity on ride
• Ashes to Ashes, dust to dust? It's the sentence everyone peddles we hear!
• *Series of changes from birth to death
• Process eg from egg to imago to egg …
• Mislaid file on revolutionary transport for complete generation
• Biological series