Likely if you harm the ribosomes the cell will die. Cells absolutely require ribosomes for normal functioning...they are constantly replacing proteins (including enzymes and the ribosomal proteins) to keep alive.
I would take my beast guess false. I hope
In a closed ecological system, any waste products produced by one species must be used by at least one other species. If the purpose is to maintain a life form, such as a mouse or a human, waste products such as carbon dioxide, feces and urine must eventually be converted into oxygen, food, and water.
In order, they are Mercury, Venus, Earth, and Mars.
