Whether any piece of water can remain alive depends mainly on its ability to maintain a certain amount of oxygen dissolved in it. If only a small amount of dirt is poured into the water, the fish will generally not be affected and the bacteria in the water will still be affected. It can play a role in decomposing dirt, because the water area can quickly recover the oxygen consumption from air and water plants. Knowing from this? ['Sufficient water plants can keep waters alive.', "Oxygen is consumed during bacteria's decomposition of dirt.", 'Bacteria can produce oxygen during the process of decomposing dirt.', 'Plants in water can generate new oxygen by breaking down dirt.']