Qidiruv

1. When it is used in respect of biological species, ecosystem or another natural systems, it refers to the level beyond which further deterioration is likely to precipitate asudden adverse, and, possibly, irreversible change.

2. A size or limit above or below which there begin to operate definite norms and restrictions.

floor level of a substance concentration at which its presence can be detected by a particular analytical method.

(or entry level) is a person's general knowledge, motives, characteristics, vision of himself and the social role, skills that are important for effectiveness in work, but causally with it are not related.

yomon boshlamoq (ishni).