STEM, then, is a specific program designed for a specific purposeâto integrate and apply knowledge of math and science in order to create technologies and solutions for real-world problems, using an engineering design approach. Itâs no surprise that STEM programs need to maintain an intense focus.
Excise definition, an internal tax or duty on certain commodities, as liquor or tobacco, levied on their manufacture, sale, or consumption within the country. See more. Dictionary.com
Excretion. Excretion is the process by which waste products of metabolism and other non-useful materials are eliminated from an organism. In vertebrates this is primarily carried out by the lungs, kidneys and skin. This is in contrast with secretion, where the substance may have specific tasks after leaving the cell.xcretion is an essential process in all forms of life. In humans urine is carried out through the urethra and that is part of the excretory system. In single-celled organisms, waste products are discharged directly through the surface of the cell.