What is the purpose of a mustard seed?

How does energy get from the sun to a second level consumer? Are onions high in protein? Where can one find a Gino's hamburger? When do they harvest grapes in Mexico? What sound does hot chocolate make? Can vegetarians eat donuts? Do the calories count if you throw up immediately after eating? How do you stop icing drying out? Does Mars make licorice? How many minutes should you keep cornbread baking? What treats can you give betta fish? When did food labeling began? Do you thaw an unbaked frozen homemade apple pie? Who sings a kid will eat the middle of an Oreo first and save the chocolate cookie outside for last? How many points in banana bread? How do you digest a jacket potato with cheese and beans? Is tapioca a coconut? What nutrients are in pure lard? Will a betta fish kill a guppy fish? Are crape myrtles monoeicious or dioecious?