The presence of _____ on Mars today would increase the chance that microbial life exists there.
a. liquid water
b. oxygen
c. nitrogen gas
d. ammonia
e. DNA
Answer: liquid water
The presence of _____ on Mars today would increase the chance that microbial life exists there.
a. liquid water
b. oxygen
c. nitrogen gas
d. ammonia
e. DNA
Answer: liquid water
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.