an arrangement among a group of automobile owners by which each owner in turn drives the others or their children to and from a designated place.
a piece of equipment, usually operated electrically, especially for use in the home or for performance of domestic chores, as a refrigerator, washing machine, or toaster
an increase in the earth's average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect
the state or fact of being responsible, answerable, or accountable for something within one's power, control, or management
to treat or process (used or waste materials) so as to make suitable for reuse:
the air, water, minerals, organisms, and all other external factors surrounding and affecting a given organism at any time.