Its B. Move around an Object
I think its d all of the above
<span>Water on Mars exists today almost entirely as ice, though it also exists in small quantities as vapor in the atmosphere and occasionally as low-volume liquid brines in shallow Martian soil. The only place where water ice is visible at the surface is at the north polar ice cap.</span>
I think the <span>primary considerations for implementing an aerobic treatment process for soil would be the quality of the soil, its flora and fauna. The organisms and substances present are very important to consider. Hope this answers the question. Have a nice day.</span>
