Convection - convection is heat transferral through fluids
They issue recalls. A recall is when a company realizes that a product has a defect that might be dangerous or causes the product to malfunction. When a thing is recalled, all stores selling it send it back to the manufacturer, while people who bought it are allowed to return it for repair or often to get another product instead of that one for free.
D. we aim it at people or things that aren't the cause of our frustration
