Using the outline below, draw a circular-flow diagram representing the interactions between households and firms in a simple economy. Explain briefly the various parts of the diagram. 
Definitions:
Ciliates
A group of protozoans characterized by the presence of hair-like structures called cilia used for movement and feeding.
Actinopods
A group of protozoa characterized by long, slender pseudopodia used for catching food and locomotion.
Cytoplasmic Projections
Extensions of the cell's cytoplasm, such as cilia and flagella, that can move the cell or move fluids past the cell.
Axopods
Long, slender, and sometimes retractable projections of some eukaryotic cells involved in locomotion or feeding.
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