True! because without gravity the spacecraft wouldn't go where there wanted it, in the time that they wanted it
1 reason is to kill disease in water
In my opinion, the correct answer among the choices listed is option C. The members of the kingdom Protista are least similar to a bacteria. Protists are eukaryotic organisms which cannot be classified as a fungus, animal, or a plant. They are mostly unicellular organisms.
D. Or A. It’s between those two
