<span>The epipelagic ocean zone is most habitable. taken from another sorce than my brain doe fam...</span>
United States Constitution was ratified in 1789, but had not much without a very considerable debate. During Constitutional Convention, delegates debated major issues such as the makeup of the legislature and the effect of slavery on representation.
Substinence farming is farming food that is just enough to live off of. You don't sell substinence crops.
Commercial farming is growing food to sustain you, and having enough left over to sell.
In both, you grow food and you keep some (or all) for yourself.