When the blades of a fan move, they have mechanical energy.

This mechanical energy comes from
A.
electrical energy flowing into the fan from the wall outlet.
B.
sound energy flowing into the fan from a radio.
C.
heat energy flowing into the fan from the air.
D.
light energy flowing into the fan through the window.

Which of the following matches the organisms described with the correct domain? a. archaea--multicellular, eukaryotic organisms that do not have cell walls b. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sources c. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycan d. bacteria--unicellular, eukaryotic organisms that always lack cell walls