The Ark - materials, construction and seaworthness

just a "thinks" struck me , would you not want to keep the poo , as post flood most good soil will have been washed away and so large amounts to soil inriching fertilizer ( poo) would be valuable to restart farming once the land is dry .i mean the plants did not go in two by two . so the seeds will need a good start to grow in time to feed the ark's zoo once the waters are gone and the zoo is free to roam .

true BUT the neutrients will have been wash out and disolved into the water , so are much more likely to end up in the oceans / seas /lake post flood that on the land , and look at the land around mt arrat not very good looking to start farming on ....i am assuming no massive seaweed growth during the flood , and as we do not know how deep the water got after covering the last mountain , can we assume it was mt everest ?? at that time , very deep water will mean massive water pressure and zero light at the land s levelalso considering the range of animals in the ark some poo couls have been used as fuel for heat / cooking /drying etc .. some poo and urine is used in cloth and leather working , again a stock could be built up , until the animal where free and could repopulate the land and provide for the people .maybe the orginal ballast of the ark could be dropped over the side and the poo packed down as new ballast to store until needed .Alo given that all would be eating dried stores from the arks food supplies the amount of poo per day would be less as time passed , dried food taking longer to digest ......