Yet, some scientists warn that phytoplankton could be seriously depleted because of ozone reduction in the atmosphere, which is believed to be caused by man.
Kuid mõned teadlased hoiatavad, et fütoplanktonil on tõsine oht hävida atmosfääri osooni vähenemise tõttu, mis usutakse olevat inimtegevuse tagajärg.