America is more productive than the euro zone and Japan largely because the latter both have a lousy record in services (too many rules and not enough competition).
If you're on the red-eye or dealing with time-zone changes, consider handling the time change on the plane versus on the ground when you need to be productive.
The encircling texture in ore zone geochemical field control minerogenetic area, and local zone of zoning texture constitutes corresponding productive ore body.