Polymers are considered superior for various applications due to their versatility, durability, and cost-effectiveness. They offer a broad range of physical properties that can be tailored to specific needs - from elasticity in rubber to the toughness of nylon. Polymers are lighter than metals and resistant to corrosion, making them ideal for automotive, aerospace, and packaging industries. Their adaptability extends to the biomedical field for prosthetics and implants, thanks to biocompatibility. Additionally, polymers can be engineered to degrade over time, offering environmental benefits over traditional materials. However, the superiority of polymers depends on the application and the specific material requirements.

Choosing between a laser and an inkjet printer depends on your specific needs. Laser printers are renowned for their speed, efficiency, and sharp text quality, making them ideal for office environments and high-volume printing. They use toner, which is more cost-effective over time for frequent printing. Inkjet printers, on the other hand, are often preferred for their superior color and photo quality, capable of producing vibrant images on various paper types. They're generally more affordable upfront and are versatile, suitable for both text and photos, making them a good choice for home users or small businesses with diverse printing needs. However, ink costs can be higher in the long term, especially for users with heavy printing requirements. Ultimately, if your focus is on professional-looking documents and speed, opt for a laser printer. For excellent photo prints and fewer pages per month, an inkjet might be the better choice.

Crest Whitening Emulsions are designed to provide a convenient and effective way to achieve brighter teeth. The formula is notable for its use of hydrogen peroxide as the key whitening agent. This compound acts by breaking down into water and oxygen upon application, with the oxygen molecules penetrating the tooth enamel to break apart the bonds of the discoloring particles, thereby whitening the teeth. Beyond hydrogen peroxide, the emulsions also include ingredients such as glycerin, for moisture retention, and various stabilizers and flavoring agents to enhance product stability and user experience. Unlike traditional whitening strips or gels that may require a specific duration of application, Crest's emulsions are designed for ease of use, allowing for application in seconds without the need for rinsing or brushing off, making it a convenient addition to daily oral care routines.