Glossary

a layer of gases surrounding the planet Earth that is retained by Earth's gravity

the production of goods for use or sale

to complete something over & over again. Something like a step of a process or even a whole process for a specific amount of time or until a certain amount of the desired product is produced.     

the making, modification, usage, and knowledge of tools, machines, techniques, crafts, systems, and methods of organization, in order to solve a problem, improve a preexisting solution to a problem, achieve a goal, handle an applied input/output relation or perform a specific function.