They could have been produced using any manner of means.

Hydrogen has already been produced from water using this approach.

High quality circuit boards can be produced using either process.

The album was produced in England using several different producers.

During the first few years of production, the company was producing using only sheep milk.

This effect is produced using a haze machine, typically done in one of two ways.

The beverage is produced since the 1950s using mineral water.

The series was produced using digital video camera, creating a somewhat different look for the show.

Then the emissions are allocated to the different products produced using the resources in the model.

The white allotrope can be produced using several different methods.