They respond to danger by diving rather than flying, and are in any case much less wary than ducks. Extant species range in size from the least grebe, at 120 grams (4.3 oz) and 23.5 cm (9.3 inches), to the great grebe, at 1.7 kg (3.8 lbs) and 71 cm (28 inches).hey respond to danger by diving rather than flying, and are in any case much less wary than ducks. Extant species range in size from the least grebe, at 120 grams (4.3 oz) and 23.5 cm (9.3 inches), to the great grebe, at 1.7 kg (3.8 lbs) and 71 cm (28 inches).
Noun. 1. productivity-the quality of being productive or having the power to produce. productiveness. fruitfulness, fecundity-the quality of something that causes or assists healthy growth.
Productivity is the term used to describe the efficiency of a production process. It is usually expressed as a ratio thus: ............................. value of useful outputs realised. Productivity ... = ... -------------------------------------------............................ . cost of resource inputs used.Stated in this way productivity is a dimensionless quantity, useful to business managers mainly as a baseline for inter-period comparison.roductivity ... = ... -------------------------------------------. ........................... . cost of resource inputs used. Stated in this way productivity is a dimensionless quantity, useful to business managers mainly as a baseline for inter-period comparison.