В про­цес­се круговорота ве­ществ содержащаяся в ор­га­ни­че­ских веществах энер­гия освобождается в результате

He got a job on a ship when he was 14.
The boys found a  wooden box in the garden.
The sailors cleane the boat while the officers were having a meeting.
He was walking in the forest when be heard a strange noise.
The men were driving to Madrid at 9 oclock last night.