What is the concentration of hydronium and hydroxide ions in pure water at 25°C?

the answer is yes, they are born/created, then they grow to their limit then produce offspring, then die.

the oceanic zone is typically defined as the area of the ocean lying beyond the continental shelf, but operationally is often referred to as beginning where the water depths drop to below 100 meters (328 feet), seaward from the coast to the open ocean.

explanation:

one centimetre is equal to 0.01 metres