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.
Definition: Productivity is a measure relating a quantity or quality of output to the inputs required to produce it. Often means labor productivity, which is can be measured by quantity of output per time spent or numbers employed.Could be measured in, for example, U.S. dollars per hour.Terms related to Productivity: 1  Total Factor Productivity.2  Labor Productivity.3  Multi-Factor Productivity.ften means labor productivity, which is can be measured by quantity of output per time spent or numbers employed. Could be measured in, for example, U.S. dollars per hour. Terms related to Productivity: 1  Total Factor Productivity. 2  Labor Productivity. 3  Multi-Factor Productivity.