Here are the possible solutions for they can't survive in a vacuum clue
Answer
Clue
Relevancy
aerobes
Clue
They can't survive in a vacuum
Definition
AEROBE, an organism that requires free oxygen, also AEROBIUM
ateam
Clue
Crack commando unit sent to prison by a military court for a crime they didn't commit, before escaping to the Los Angeles underground where today, still wanted by the government, they survive as soldi
aspen
Clue
Tree that can survive forest fires
Definition
the trembling poplar, also ASPINE
needs
Clue
Can't survive without
Definition
NEED, to have an urgent or essential use for
non
Clue
"___ can survive everything but a misprint": Oscar Wilde
Definition
(Latin) not
poet
Clue
One who "can survive everything but a misprint": Wilde