The general idea
Humanity is in a state of continuous growth and multiplying with time and human nature loves expansion and reproduction and we will not be able to reduce that and the earth will not be enough for everyone.
Human civilization began with agriculture and will begin on Mars with agriculture as well, but before we plant we must prepare the soil and bacteria that help in the growth of agriculture on Mars
By sending animal waste, plants and dry trees full of bacteria and insects that reproduce quickly, you should know that within 24 hours insects and bacteria will have grandchildren and generations because they reproduce faster than humans and animals.
Accordingly, the proof of the success of this process is the Rub' al Khali desert because it is a difficult environment for all insects and bacteria that create a fertile and suitable environment for agriculture.