We don't know that they do. Evidence of running water some time in the past
has been found on the surface of Mars, but as yet no direct evidence of the past
or present existence of micro-organisms.
they don't
verydeadly
They are small living things.
Photosynthetic micro organisms make their own food
anaerobes
micro-organisims such as bacteria.
they need the fresh salt water to survive in the freshwater biome.
antibiotics and vaccinemy father told me this
While some micro oraganisims are bad for you, others are very helpful. Some are used to make bread rise and to make yogurt.
No
no there is no oxygen on mars and no water
cancer