nos sirve para eliminar la duplicidad de funciones y los movimientos sin propósito, se reduce la actividad dispersa y nos dice que la planeación implica utilizar el pensamiento reflectivo antes de actuar

entonces cual es la pregunta

Explanation:

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.