Qidiruv

n ko'ch.перен. oʻzbekchaqorongʻilik, zulmat, gʻamginlik, maʼyuslik, gʻam, qaygʻuruschaмрак, уныние

wide development of a phytoplankton in a pool accompanied by a change of water coloring. Caused by unfavorable change of a water regime (stagnation of water, pollution by organic substances and mineral fertilizers, clogging, etc.): an oxygen condition of a pool degrades, it causes killing of fishes and other water animals.

Sudden splash in algae growth which can affect water quality adversely and indicate potentially hazardous chemical changes in local water.