Used ink cartridges for recycling image by itsallgood from Fotolia. Canon printers feature an ink absorber pad that soaks up excess ink from the print cartridges, preventing smears and keeping the cartridge free of dried ink. While many printer manufacturers include pads such as these on their inkjet printers, Canon's is unique in the fact that the printer actively monitors the waste ink absorber pads and will display an error message when the pads are full of ink. While it is recommended that the printer be sent in for service, it is possible to replace the ink absorber pads at home.
Everyone in the world is unique-just look at their genes. Start with the basics in a video that discusses how to solve Punnett squares and interpreting results. An online activity prompts users to complete Punnett squares with monohybrid crosses. For a more applicable approach to the topic, have class members watch a video on the monohybrid crosses of hairy and hairless guinea pigs, or complete a lesson that explores the possible offspring of two cats, as well as potential genetic diseases and disorders.