Biology, 20.01.2020 20:31, yudayang2012pa9u8p
Scientists are currently trying to look for evidence of life on other planets, specifically mars. one sign of life (like our own) is the presence of water. what elements would you look for on mars to see if we, as humans, could ultimately survive there?
choose one or more:
a. oxygen
b. carbon
c. hydrogen
d. calcium
e. nitrogen
Answers: 3
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